In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.

Example Input: Article: Helicopter Aerial Tour Explore the Grand Cannon from the eyes of the eagle. A wonderful 12- to 15-minute helicopter tour will soar through the canyon for an aerial experience of wonderful views. Our aerial tour is not available anywhere else in the world! Ticket:$120. 00 per person, plus 10% tax. Please call us at 1-888-868-9378 for seasonal rates, specials or to book by phone. Helicopter-Boat Tour Helicopter tour starts at the Grand Canyon, West Side. Take a 4,000-foot fall to the Colorado River below. Helicopters fall 4,000 feet from the canyon side to the banks of the Colorado River where visitors can enjoy a 15- to 20-minute boat ride down the Colorado. Ticket:$150. 00 per person, plus 10% tax. Champagne Helicopter Tour Experience the beauty of the Grand Cannon: Soar above the Hoover Dam and the dead volcanoes. You go aboard a million-dollar helicopter with all forward facing seats allowing 180 degrees of views in air-conditioned comfort. You will see the Hoover Dam, the Colorado River, the Grand Cannon and more! You land to have a champagne picnic lunch at the Grand Cannon. Las Vegas Adventure Tour Helicopter tours to the Grand Canyon West include a wonderful Las Vegas adventure tour. Aerial sightseeing tours originating in Las Vegas, Nevada include breathtaking views of Lake Mead, the Mohave Desert, and the west edge of the Grand Canyon. Aerial tours including the round trip as well as combination tours attract many visitors. Visitors arriving at the Hualapai elation's Grand Cannon West Airport may select one of the activities above. 
 Answer: 330 dollars.
Example Output: How much should a couple pay for a helicopter-boat tour?

Example Input: Article: Using too much water or throwing rubbish into our rivers are clear ways that humans can put our water supply in danger , but we also affect our water supply in less obvious ways. You may wonder how paving  a road can lead to less useable fresh water. A major part of the water we use every day is groundwater. Groundwater does not come from lakes or rivers. It comes from underground. The more roads and parking lots we pave the less water can flow into the ground to become groundwater. Human activity is not responsible for all water shortages . Drier climates are of course more likely to have droughts  than areas with more rainfall, but in any case, good management can help to make sure there is enough water to meet our basic needs. Thinking about the way we use water every day can make a big difference, too In the United States , a family of four can use 1. 5 tons of water a day! This shows how much we depend on water to live, but there's a lot we can do to lower the number. You can take steps to save water in your home. To start with use the same glass for your drinking water all day. Wash it only once a day. Run your dishwasher  only when it is full . Help your parents fix any leaks in your home. You can even help to keep our water supply clean by recycling batteries instead of throwing them away. 
 Answer: Throwing rubbish into lakes.
Example Output: Which of the following is most likely to lead to less groundwater?

Example Input: Article: When I was 18, I had a motorbike accident that put me in a coma for three months. The doctors said there was little chance of my coming out of it, but my identical twin, Marcus, didn't believe them and carried on talking to me. My first words when I came to myself were, "Hello, Marcus. "Even though I had no memory of my own name, or that the woman crying at my bedside was my mother, I knew Marcus immediately; it was like a genetic memory. just felt close to him. As weeks went by, I still could remember nothing before the accident. Marcus was the only person I could relate to. I had to relearn everything, and Marcus helped me. Because of my twin I wasn't scared of having lost my memory; I believed everything he said. He became my memory, telling me about my school, friends, previous girlfriends and holidays, showing me family photographs, and telling me how perfect I was. With his encouragement I slowly recovered and tried to become the person everyone around me loved. Then years later, when my memories flooded back, I learned that I was anything but perfect--I was troublesome, selfish, and now very angry with Marcus for having lied to me. But finally I understood. Out of love, Marcus had chosen not to tell me about my dark side. He wanted me to have a fresh start--and in fact I had one. Thanks to him, I was able to get married and have kids. I'm 46 now, and feel as if I'm in the third stage of my life. I know all there is to know, and wouldn't want it any other way. 
 Answer: Thoughtful.
Example Output:
Which of the following words best describes Marcus?

