You're given a sentence and your task is to classify whether the sentence is acceptable or not. Any sentence which is grammatically correct, has a naturalistic text, is written by a native speaker and which minimizes superfluous content is acceptable, otherwise unacceptable. If the sentence is acceptable then write "acceptable", otherwise "unacceptable".
--------
Question: He seems intelligent to study medicine.

Answer: acceptable


Question: He's a man to whom liberty we could never grant.

Answer: acceptable


Question: The man I think chased Fido returned.

Answer:
acceptable