Teacher: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
Teacher: Now, understand the problem? If you are still confused, see the following example:
Who was the first American President?
Solution: president of the united states
Reason: The question talks about the president of the USA.

Now, solve this instance: Generally acknowledged as the father of role-playing games, Gary Gygax, along with Dave Arneson, was the mastermind behind what major game?
Student:
dave arneson