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

Input: Consider Input: Which US state was the title of a no. 1 hit for the Bee Gees in 1967?

Output: bee gees


Input: Consider Input: The counties of Alameda, El Dorado, Fresno, Marin, Mariposa, Nevada, Orange, Riverside, Sacramento, San Bernardino, San Joaquin, San Mateo, Santa Clara, Santa Cruz, Sonoma and Ventura are in what state of the USA?

Output: santa clara, california


Input: Consider Input: The Bridalveil Waterfall is in which US national park?


Output: bridalveil fall