TASK DEFINITION: In this task, you will be presented with a context passage, a question about that paragraph, and a possible answer to that question. The task is to check the validity of the answer. Answer with "Yes" or "No".
PROBLEM: Sound waves are mechanical waves. They can travel only through matter. They cannot travel through empty space. This was demonstrated in the 1600s by a scientist named Robert Boyle. Boyle placed a ticking clock in a sealed glass jar. The clock could be heard ticking through the air and glass of the jar. Then Boyle pumped the air out of the jar. The clock was still running, but the ticking could not be heard. Thats because the sound couldnt travel without air particles to transfer the sound energy. Is there any other place where sound cannot be heard? Here is a hint: is there any other place that does not have air molecules? Thats right, in space sound cannot be transferred. So can astronauts hear each other? Yes, they can, because they are in enclosed space stations or pressurized suits.In both cases, they are surrounded by air molecules. If they left their space ship and did not use their electronics, they would not be able to hear each other. Next time you watch a science fiction movie, think about this factoid. When spaceships are destroyed by hostile alien beings, there would be no sound heard. Sound waves can travel through many kinds of matter. <sep>Can sound waves travel through empty space?<sep>definitely not

SOLUTION: Yes

PROBLEM: Mastermind Charlie Mascarenhas and his accomplice Riya are one of the greatest pair of thieves in India . A friend of Charlie , Raj is killed by the Russian mafia . At Raj's funeral , his wife hands Charlie a CD containing information about the transfer of gold by train from Russia to Romania . Charlie decides to rob the train with the help of imprisoned Don and con-artist Victor Braganza . They hire a team of criminals to join them in the robbery . The group includes Spider , who is a world-class hacker , an explosives expert Bilal Bashir , a prosthetic makeup artist Sunny , and an illusionist Ronnie . Charlie is also having an affair with Victor's daughter , Naina , who knows nothing about her father and Charlie's criminal activities . The group devise a plan to rob the Russian train in the sliest way possible . Spider hacks into a Russian satellite system and Ronnie uses his illusion to trick the soldiers guarding the gold while the rest of the team transfer the gold from the train . The robbery is executed successfully , however while celebrating Spider double crosses the gang and tries to flee with all of the gold . Spider is stopped by Ronnie , who is then shot multiple times by Spider's assassins . The group are chased by the assassins and Ronnie and Riya are killed . Charlie , Bilal and Sunny manage to escape after Spider blows up the location and flees with the gold . Charlie calls Victor to tell him about the betrayal , but Naina overhears the conversation . At the same time Spider's assassins breaks into the house and murder Victor . <sep>Who tries to stop the world-class hacker and gets killed?<sep>Riya

SOLUTION: No

PROBLEM: Abrasion is another type of weathering. Like ice wedging, it is a form of mechanical weathering. Like ice wedging, abrasion does not change the rock into another type of rock. With abrasion, one rock or piece of sediment bumps against another rock. Rocks dont normally roll around on their own, so why do they move? There are a couple of reasons a rock may move. Gravity can cause rocks to move. They may roll downhill or fall off a cliff. As they roll down a hill, they bump into each other. Maybe a moving rock hits a rock that is not moving at the bottom of the hill. Moving water causes rocks and sediment to move. Rocks are bounced along the bottom and bump against one another. As they collide, they begin to chip away at each other. Angular rocks become more rounded with each collision. Strong winds cause abrasion. The wind carries sediment. This sediment is thrown against other rocky surfaces by the wind. It is like sand-blasting a rock. <sep>What is sediment thrown against other rocky surfaces similar to?<sep>Like hit it with a drill

SOLUTION:
No