instruction: Is the next sentence syntactically and semantically acceptable?

The gardener planted roses in the garden.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Terry touched the cat.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

At most three boys didn't see anything.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

John sang a song, Mary played the piano.

response:
acceptable