What is the question "What are geckos ?" asking about?

OPTIONS:
- description
- entity
- abbreviation
- human
- numeric
- location
A: description

What is the question "Who was the star witness at the Senate Watergate hearings ?" asking about?

OPTIONS:
- description
- entity
- abbreviation
- human
- numeric
- location
A: human

What is the question "Who was the first doctor to successfully transplant a liver ?" asking about?

OPTIONS:
- description
- entity
- abbreviation
- human
- numeric
- location
A: human

What is the question "What instrument is Ray Charles best known for playing ?" asking about?

OPTIONS:
- description
- entity
- abbreviation
- human
- numeric
- location
A:
entity