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: Consider Input: Category: YOU GET AN "F" 
Clue: These seedless, nonflowering plants reproduce by spores on the undersides of their fronds

Output: ferns


Input: Consider Input: Category: MEN OF SCIENCE 
Clue: On a scale of 1 to 10, his "Earthquakes" article for the 15th edition of Encyclopedia Britannica was a 10

Output: richter


Input: Consider Input: Category: AT THE MOVIES 
Clue: Apollo Creed & Ivan Drago duke it out in Vegas early in the fourth film in this series


Output: rocky