instruction: Is the next sentence syntactically and semantically acceptable?

They wondered what she did yesterday.
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Willy is taller than Bill is strong and.
OPTIONS:
- unacceptable
- acceptable

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Carrie touched the fence with a stick.
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

I've never seen a man taller than my mother.
OPTIONS:
- unacceptable
- acceptable

response:
acceptable