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.
One example is below.
Q: Category: HOMOPHONIC PAIRS 
Clue: It's a notation on a percussion store to clash
A: cymbal symbol
Rationale: "Cymbal" and "symbol" both have the same pronunciations but different meanings, hence they are homophonic pairs. A symbol is the notation and a cymbal is a percussion instrument that clashes and rings.
Q: Category: FAMOUS AMERICANS 
Clue: This man was nearby at the assassination of 3 U.S. presidents, one of whom was his father
A:
robert todd lincoln