instruction: Is the next sentence syntactically and semantically acceptable?

The meeting began at 4 P.M.
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

To whom did you throw the ball?
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

You is the only person that I can rely on.
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Up what did he look?
OPTIONS:
- unacceptable
- acceptable

response:
acceptable