instruction:
In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.
question:
Article: The story happened during the Second World War. An old man lived in a small town of Germany. He had three sons and they all worked in the same factory where he had worked. After the war had begun, his sons were all made to join the army one after another and they all died in the fights. The old man was very sad. He didn't have enough food and was often hungry. And nobody helped him and he didn't know how to go on living. It was a very cold winter night. The old man couldn't go to sleep. He had been hungry for two days and it was so cold in his room that ice could be seen. He had to get up and began to run in the room until he lay down on the floor. The next morning he had to beg from door to door. He had been to a lot of cities and knew a lot. Once he came to a village, but the villagers were all poor and couldn't give him anything. He was too hungry to go to another village. He thought hard and found a way. He came to a police station and called out, "Hitler is a foolish pig!" Out came an old policeman at once. He took the old man into a room, gave him some bread and a cup of tea. Then he said, "Don't say so in our village, sir!" "I'm sorry, sir," said the old man. "I don't know it's Hitler's hometown." "No, no, sir," the policeman said in a hurry. "It's pigs' hometown!"
Answer: they had to do so
answer:
The old man's sons joined the army because _ .

question:
Article: Pets provide an unconditional love that requires very little on the part of the human. Animals are so special to those of us who love them. We miss them when they are no longer with us. We grieve for them in ways which are just the same as grieving for a human loved one. Whether the end comes through old age, illness, or sudden death, the death of a pet can cause enormous feelings of sorrow, guilt, and loneliness for children and adults alike, as the animal was considered a family member, a child's favoured playmate, or an older person's loyal and faithful companion. Some people don't want a pet because they do die! It's understandable to be unwilling to expose yourself to death but, at the same time, _ . When we live with animals we're more in step with the rhythms of the planet from day to night and from season to season because our companions make us more aware of the changes around us. Our companion animals teach us about the simple gifts of a beautiful day, a good meal and a gentle touch. The death of a pet can make us struggle with our belief structure-a natural part of the grieving period. Whether grieving an animal or human, we question our beliefs and many people find their belief structure becomes stronger when they ask themselves hard questions. Others find a new way of acceptance. And we learn from our animals. Animals aren't afraid to die; they show us that the end of life can be faced without fear. They can teach us to accept death as an opening for love and wonder. Allow yourself to grieve in whatever way is appropriate for you. The loss of a pet is real grief and causes us to travel through the stages of grief-denial, anger, depression, guilt, and acceptance. These stages must be lived through for the mourning to allow full healing.
Answer: pets only provide people with love but never ask for return
answer:
According to the passage, the reason why some people don't want a pet may be that _ .

question:
Article: For six hours we shot through the landscape of the Karoo desert in South Africa. Just rocks and sand and baking sun. Knowing our journey was ending, Daniel and I just wanted to remember all we had seen and done. He used a camera. I used words. I had already finished three notebooks and was into the fourth, a beautiful leather notebook I'd bought in a market in Mozambique. Southern Africa was full of stories. And visions. We were almost drunk on sensations. The roaring of the water at Victoria Falls, the impossible silence of the Okavango Delta in Botswana . And then the other things: dogs in the streets, whole families in Soweto living in one room, a kilometre from clean water. As we drove towards the setting sun, a quietness fell over us. The road was empty -- we hadn't seen another car for hours. And as I drove, something caught my eye, something moving next to me. I glanced in the mirror of the car; I glanced sideways to the right, and that was when I saw them. Next to us, by the side of the road, thirty, forty wild horses were racing the car, a cloud of dust rising behind them -- brown, muscular horses almost close enough to touch them, to smell their hot breath. I didn't know how long they had been there next to us. I shouted to Dan: "Look!", but he was in a deep sleep, his camera lying useless by his feet. They raced the car for a few seconds, then disappeared far behind us, a memory of heroic forms in the red landscape. When Daniel woke up an hour later I told him what had happened. "Wild horses?" he said. "Why didn't you wake me up?" "I tried. But they were gone after a few seconds." "Are you sure you didn't dream it?" "You were the one who was sleeping!" Typical, he said. "The best photos are the ones we never take." We checked into a dusty hotel and slept the sleep of the dead.
Answer: recorded their experiences in different ways
answer:
During their journey in Africa, the two travelers _ .