Instructions: You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
Input: Category: THE 1970s
Clue: A change of procedure in 1979 led to 3 of these being named Bob, David & Frederic
Output:
hurricanes