Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
One example: Who was the first American President?
Solution is here: president of the united states
Explanation: The question talks about the president of the USA.

Now, solve this: Which comic strip written and illustrated by Bill Watterson, first run from 1985 to 1995, follows the antics of a precocious six-year-old boy and his sardonic stuffed tiger?
Solution:
bill watterson