instruction: Is the next sentence syntactically and semantically acceptable?

Waldo didn't report the possibility that anyone had left.
OPTIONS:
- unacceptable
- acceptable

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Himself likes John.
OPTIONS:
- unacceptable
- acceptable

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

The bear sniffs
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

She bought John's book.
OPTIONS:
- unacceptable
- acceptable

response:
acceptable