instruction: Is the next sentence syntactically and semantically acceptable?

The weights stretched the rope over the pulley.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

John believes that him is sick.

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Because never had Sir Thomas been so offended, even Mr Yates left.

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

An old woman lived in the forest.

response:
acceptable