instruction: Is the next sentence syntactically and semantically acceptable?

The clever snake disappeared into a hole in the ground.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Any cat doesn't like mice.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Columbus believed the earth to be round.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Which packages which are to be mailed tomorrow is it possible that Sam didn't pick up until it had stopped raining?

response:
acceptable