instruction: Is the next sentence syntactically and semantically acceptable?

I am having eaten seaweed.
OPTIONS:
- unacceptable
- acceptable

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Every student read any book on giraffes he found.
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Brian hit the fence with the stick.
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

After the executioner left, Poseidon wept.
OPTIONS:
- unacceptable
- acceptable

response:
acceptable