TASK DEFINITION: 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.
PROBLEM: Category: ANIMAL VERBS 
Clue: Nag or pester persistently

SOLUTION: badger

PROBLEM: 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

SOLUTION: richter

PROBLEM: Category: PRESIDENTIAL RHYME TIME 
Clue: William Howard's log vessels

SOLUTION:
taft\'s rafts