instruction: Is the next sentence syntactically and semantically acceptable?

Joan knew the answer.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Bill kissed herself.

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Is there someone who can pledge $1000?

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

John is ready for you to inspect his bunk.

response:
acceptable