Part 1. 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.
Part 2. Example
Category: WHO'S BUYING? 
Clue: YouTube, in 2006
Answer: google
Explanation: Google acquired, i.e. bought, YouTube in 2006 for $1.65 billion.
Part 3. Exercise
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