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.

Example Input: Article: Many people have wondered what makes the oceans rise and fall on the word's beaches twice a day. Those tides are caused by the force of the Moon's gravity and the rotation of the Earth. Gravity acts on the center of any solid object. The Earth is mostly molten rock, but compared to the oceans, we can think of it as a solid object. As you know, the oceans are fluid and lie on the surface of the Earth. When the Moon is overhead, the oceans are four thousand miles closer to the Moon than the Earth's center is. Because the oceans are closer, the Moon pulls harder on the water than on the Earth. This stronger pull makes the water bunch up a little under the Moon, creating a high tide. At the same time, the oceans on the opposite side of the Earth are four thousand miles farther from the Moon than the Earth's center is. The Moon's pull on this water is weak. This water bunches up because it is "left behind"(making another high tide) as the Earth is pulled slightly towards the Moon. When the waters bunch up on these two sides of the Earth, they draw water away from the other sides of the Earth, which creates the low tides. As the Earth rotates, different parts of the land and oceans pass through the high-tide and low-tide zones. And that makes the waters on our coasts go up and down.
Answer: Moon's gravity or Earth rotation
Example Output: According to the passage, there would be no tides if there were no _ .

Example Input: Article: Starting high school means many changes in your life. Most teenagers look forward to the first day of high school, but still feel a little bit nervous. In order to make your high school life easier, you can follow these tips. Learn all you can about your first day before the first day. Take part in some activities that are held at the school for new students to know the school better. If parents are invited to these activities, take yours with you. Carefully look over all the materials you receive. Be sure you know where the school's buildings are. Get the things you will need for class. Buy the things suggested on your teachers' supply lists and place your materials for each class separately. Keep up with your high school workload . If you find you're not doing well in a subject, make use of after-school study groups or ask your teacher to help you with your schoolwork. Consider private tutoring to get you through a difficult time. There're more extracurricular activities in high school than in middle school, such as clubs, music and theater groups, student government, and sports teams. Make friends and be seen at such school activities. Join a club or other organizations to meet people and develop friendships. Ask someone in school activities if you don't know how. This is a good time to do what you like doing and an opportunity to try new things. Who said school has to be all work and no play? Since you'll attend more activities in high school than in middle school, you'll have to learn how to manage you time...
Answer: tell us how to live an easier life in high school.
Example Output: The writer wrote this passage to _ .

Example Input: Article: This is news on the Hour. Ed Wilson is reporting. The President and First Lady will visit Africa on a goodwill tour in May. They plan to visit eight African countries. Reports from China say the Chinese want closer ties between China and the U.S. and Western Europe. A group of top China scientists starts its ten-nation tour next month. Here in Milmi, the mayor is still meeting with the leaders of the teachers' union to try to find a way to end the strike. City schools are still closed after two weeks. In news about health, scientists in California report findings of relationship between the drinking of coffee and the increase of heart disease among woman. According to the report in the American Medical Journal, the five-year study shows this: women who drink more than two cups of coffee a day have a greater chance of having heart disease than women who do not. In sports, the Chargers lost again last night. The BBS beat them one to nothing. The Wingers had better results. They beat the Rifles 7 to 3.It was their first win in their five matches. That the news of the Hour. And now back to more easy listening with Jan Singer.
Answer: the strike led by the teachers' union
Example Output:
The passage is about _