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

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?
santa clara, california

Aldebaran is the brightest star in which constellation?
aldebaran

Formerly known as Sky Dome, Rogers Centre is home to what American League baseball team, the only MLB team located outside the United States?

american league

