What is the question "Where is Natick ?" asking about?
A: location

What is the question "What racehorse won an Associated Press poll as the greatest horse of the 20th century ?" asking about?
A: entity

What is the question "What are the three most populated countries in the world ?" asking about?
A: location

What is the question "Who played for the Chicago Bears , Houston Oilers and Oakland Raiders in a 26-year pro football career ?" asking about?
A:
human