instruction: Is the next sentence syntactically and semantically acceptable?

Tony bent at the rod.

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

I doubt his sincerity.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

The two boys looked up the high stairs.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Teresa bottle fed soy milk to the baby.

response:
acceptable