instruction: Is the next sentence syntactically and semantically acceptable?

I saw Mary and downtown yesterday your friend from Boston.
OPTIONS:
- unacceptable
- acceptable

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

There preferred for Sandy to get the job.
OPTIONS:
- unacceptable
- acceptable

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

We spotted them run.
OPTIONS:
- unacceptable
- acceptable

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

This bed was slept in by George Washington.
OPTIONS:
- unacceptable
- acceptable

response:
acceptable