YuITC/NarrativeQA-Dataset-Restructured huggingface dataset:
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: Challenger claims the Earth will move into a belt of poisonous what?
Answer: Ether
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: What counters the effect of the poison?
Answer: Oxygen
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: Which island of people did Challenger study to theorize that the earth will be poisoned?
Answer: Sumatra
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: How many people finally survive in Challenger's home?
Answer: Five
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: How do(es) the survivor(s) travel through the dead countryside in the aftermath of the poisonous belt?
Answer: By riding in Challenger's car
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: After travelling back to Challenger's house near the end, what discovery is made about the poison?
Answer: The effect is temporary
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: How long did the poisonous effect last?
Answer: 28 hours
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: At the end, what was humanity made to appreciate?
Answer: A higher value on life
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: Who were  the people   Challenger asked to come to his house?
Answer: Edward Malone, Lord John Roxton, and Professor Summerlee
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: Where was Challenger home located?
Answer: Outside London.
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: Who were the people locked in a sealed room?
Answer: Challenger,Challenger wife,Edward Malone,Lord John Roxton and Professor Summeriee.
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: What was going to happen to Earth?
Answer: Earth was going to moved through a poison atmosphere.
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: Where were Challenger servants?
Answer: Outside the sealed room.
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: What were Challenger servant doing?
Answer: Challenger servants were performing their duties.
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: How did the ederly bed-ridden woman survived?
Answer: She had tank of oxygen.
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: How long was the effect of the poison on the people of the Earth?
Answer: The effect was temporary
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: What happened when people awoke?
Answer: They did not remember what had happened to them.
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: What did Challenger and his friends did?
Answer: They told the world  what had happened
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: What does Challenger asks his three friends to bring?
Answer: Oxygen
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: What kind of belt is Earth moving into?
Answer: Poisonous ether
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: What group of people does Challenger use as an example?
Answer: Sumatra
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: How does the group travel to London?
Answer: In Challenger's car
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: What world are Challenger's friends from?
Answer: The Lost World
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: Where do Challenger, his wife and his friends go when they arrive?
Answer: Into a sealed room
Challenger sends telegrams asking his three companions from The Lost World — Edward Malone, Lord John Roxton, and Professor Summerlee – to join him at his home outside London, and instructs each of them to 'bring oxygen'. On arrival they are ushered into a sealed room, along with Challenger and his wife. In the course of his researches into various phenomena, Challenger has predicted that the Earth is moving into a belt of poisonous ether which, based on its effect on the people of Sumatra earlier in the day, he expects to stifle humanity. Challenger seals them in the room with cylinders of oxygen, which he (correctly) believes will counter the effect of the ether.
The five wait out the Earth's passage through the poison belt as they watch the world outside die and machines run amok. (According to Victorian values – or to Doyle's understanding of them – Challenger's servants are left outside the sealed room, and they continue to perform their duties until the ether overtakes them.) Finally, the last of the oxygen cylinders is emptied, and they open a window, ready to face death. To their surprise, they do not die, and conclude the Earth has now passed through the poison belt. They journey through the dead countryside in Challenger's car, finally arriving in London. They encounter only one survivor, an elderly, bed-ridden woman prescribed oxygen for her health.
After returning to Challenger's house, they discover that the effect of the ether is temporary, and the world reawakens with no knowledge that they have lost any time at all. Eventually Challenger and his companions manage to convince the world what happened – a task made easier by the tremendous amount of death and destruction caused by runaway machines and fires that took place while the world was asleep – and humanity is shocked into placing a higher value on life.

Question: Why doesn't the group die after opening the window?
Answer: The Earth had passed the poison belt