instruction: Is the next sentence syntactically and semantically acceptable?

There was a snake behind the car the time bomb was sitting in.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

The lecture squirmed Sylvia.

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Cynthia munched on peaches.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Who did you give pictures of to friends of?

response:
acceptable