instruction: Is the next sentence syntactically and semantically acceptable?

For Mary to love that boor is a travesty.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

The banana is being eaten by that monkey.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

His expectations lower, the higher the stakes are.

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

The men practice medicine.

response:
acceptable