instruction: Is the next sentence syntactically and semantically acceptable?

That Sam didn't pick those packages which are to be mailed tomorrow up is possible.

response: unacceptable


instruction: Is the next sentence syntactically and semantically acceptable?

She might be pregnant.

response: acceptable


instruction: Is the next sentence syntactically and semantically acceptable?

The princess bowed to the queen.

response: acceptable


instruction: Is the next sentence syntactically and semantically acceptable?

We went through the woods and over the bridge.

response:
acceptable