Definition: 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.
Input: Article: Jack London is a famous American writer. His most widely known book is the Call of the Wild, the story of the adventure of a large dog in the frozen north. Jack London was born on January 12, 1876, in San Francisco, California. His family was very poor, and Jack had to leave school to make money. He worked hard at many different jobs. Later, Jack returned to school, but he didn't stay. He wrote, "Life and pocket book were both too short." In 1897, he went to Alaska to find gold. Instead, he found ideas there for his book stories. He returned home and started to write. His writings were successful, and he became rich and famous in his twenties. Jack London was not a happy man, however. In poor health, he took his own life in 1916. He was then only 40 years old. 
 Answer: find gold
