instruction: Is the next sentence syntactically and semantically acceptable?

Of Bill on, this girl in the red coat will put a picture of Bill on your desk before tomorrow.
OPTIONS:
- unacceptable
- acceptable

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Who do you believe that Sara invited?
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

I can tell you when, but I can't tell you why, he left me.
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Fred watered the plants flat.
OPTIONS:
- unacceptable
- acceptable

response:
acceptable