instruction: Is the next sentence syntactically and semantically acceptable?

I loaned my binoculars a man who was watching the race.

response: unacceptable


instruction: Is the next sentence syntactically and semantically acceptable?

Who did you ask whether Mary knows why John likes?

response: unacceptable


instruction: Is the next sentence syntactically and semantically acceptable?

Fluffy is sick, which I slapped a boy who wouldn't acknowledge.

response: unacceptable


instruction: Is the next sentence syntactically and semantically acceptable?

John ate.

response:
acceptable