Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

Ex Input:
What breed of dog is Marmaduke in the newspaper cartoon strip of that name?

Ex Output:
dog


Ex Input:
On November 22, 1986, which boxer became the youngest WBC Heavyweight champion, at age 20 years, 4 months, when he scored a TKO over Trevor Berbick in the second round?

Ex Output:
boxing


Ex Input:
What ADHD drug became heavily prescribed?

Ex Output:

attention deficit hyperactivity disorder