Detailed Instructions: 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.
See one example below:
Problem: Article: There are a lot of public libraries in Britain. These libraries have more than one hundred and fifteen million books, not including those libraries of public schools. Public libraries not only lend books, music records but also help children, patients in hospitals and others to get special play readings, film shows and so on. The first public libraries were founded in about the year 1850. Today's public libraries usually have a reading-room, a lending room and a reference room. The greatest and most famous library in Britain is that of the British Library in London. It was founded in 1973 and has over 10, 000, 000 books. It has nearly every magazine, newspaper and book published in Britain and other parts across the world.
Answer: 10,000,000 or less.
Solution: How many books are there in the British Library?
Explanation: In the Article, 10,000,000 is mentioned for the number of books available in the British Library, so this is a good question.

Problem: Article: Amazing Rafting Adventures White water rafting is one of the classic, wild, activities in the outdoors. It is also an opportunity for an unbelievable family adventure. Around the country, there are several rivers--and rafting outfitters--that are perfectly suited to the entire family. Here are three of the best: New River Gorge, West Virginia Rafting in West Virginia is renowned for its established infrastructure, reliability, and easy access. These things make it an obvious choice for a family vacation. Famous areas, including the New River Gorge, offer everything from lazy floats to intense Class IV runs. READ MORE: Water Water Rafting: Top 5 U.S. Locations Jackson Hole, Wyoming Jackson Hole provides a full range of opportunities in the outdoors--and white water rafting is certainly one of them. Popular trips include the rough rapids of the Snake River and gentle floats in nearby Yellowstone National Park. READ MORE: What You Need to Know Before Visiting Yellowstone National Park Grand Canyon, Arizona For really bold families, a multi-day trip down the Colorado River in the Grand Canyon is the penultimate adventure. Guided trips typically pack in boats-worth of supplies so the overnight adventures are far from "roughing it." Instead, evenings are catered in a rugged luxury style, allowing everyone to rest up for the next day's activities. Whether looking for a casual float or a challenging adventure, white water rafting is a great option for any active family vacation.
Answer: All three rafting rivers are suitable for the whole family.
Solution:
What is the common feature of the three rafting adventures?