Given an trivia question precisely answer the question with a word/phrase/name. External resources such as Wikipedia could be used to obtain the facts.

Who married tennis player John McEnroe in 1986?
tatum o'neal

Snail fever is caused by organisms of which genus?
schistosoma

Can you name the only actor to appear as a main character in both 'The Magnificent Seven' and 'The Dirty Dozen'?

charles bronson