instruction:
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: PLAYBILL 
Clue: This musical's "American Dream" ended on B'way after 4,097 performances--& a lot of helicopter flights
answer:
miss saigon


question:
Category: LOBBYISTS 
Clue: Former senators Alan Simpson & this man co-chair Project Independence to reform campaign finances
answer:
bill bradley


question:
Category: THE SEC 
Clue: The act that set up the SEC restricted buying stocks "on" this--no more than 45% of the market price could be borrowed credit
answer:

margin