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: SIGNS & SIGNALS 
Clue: The ringing of the church bells on this holiday in 1572 was the signal to massacre Huguenots

SOLUTION: st. bartholomew\'s day

PROBLEM: Category: ENDS IN "I" 
Clue: Stephen S. Wise was a well-known one; Isaac Bashevis Singer was the son of one

SOLUTION: a rabbi

PROBLEM: Category: GRAMMY WINNERS 
Clue: Grammy voters were fixated with this one-named Colombian hottie who won for "Fijacion Oral Vol. 1"

SOLUTION:
shakira