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.
--------
Question: Category: CALIFORNIA HISTORY 
Clue: Surname of the employer of James W. Marshall, who found gold in a stream near the Sacramento river in 1848

Answer: sutter


Question: Category: FOOD SCIENCE 
Clue: In 2002 Japanese scientists discovered it contains the enzyme Lachrymatory-Factor Synthase

Answer: onions


Question: Category: WORLD CAPITALS 
Clue: Built about 50 years ago, it's the only world capital to start with the letter "I"

Answer:
islamabad