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: 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.
Example output: How many books are there in the British Library?
Example 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.
Q: Article: When she looked ahead, Florence Chadwick saw nothing but a solid wall of fog. Her body was numb .She had been swimming for nearly sixteen hours. Already she was the first woman to swim the English Channel in both directions. Now, at age 34,her goal was to become the first woman to swim from Catalina Island to the California coast. On that fourth of July morning in 1952,the sea was like an ice bath and the fog was so thick that she could hardly see her support boats. Sharks swam toward her lone figure, only to be driven away by rifle shots. Against the frigid grip of the sea, she struggled on--hour after hour--while millions watched on national television. Alongside Florence in one of the boats , her mother and her trainer offered encouragement. They told her it wasn't much farther. But all she could see was fog. They urged her not to give up. _ With only a half mile to go, she asked to be pulled out. Still thawing her chilled body several hours later, she told a reporter," Look, I'm not excusing myself, but if I could have seen land I might have made it." It was not fatigue or even the cold water that defeated her .It was the fog. She was unable to see her goal. Two months later, she tried again. This time ,despite the same dense fog, she swam with her faith intact and her goal clearly pictured in her mind. She knew that somewhere behind that fog was land and this time she made it! Florence Chadwick became the first woman to swim the Catalina Channel, eclipsing the men's record by two hours!
Answer: Because the sea water was too cold.
A:
Why didn't Florence swim across the Catalina Channel for the first time?