instruction: Is the next sentence syntactically and semantically acceptable?

His friend learned dancing.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Aren't I going?

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

The sea monster drowned the sailors.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

John bought a book for the student.

response:
acceptable