instruction: Is the next sentence syntactically and semantically acceptable?

is out since the following is finite.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

They depend on Mary.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Everybody who is in Mary's semantics seminar is writing a paper on polarity items.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

What his father wants him to be is more of a man.

response:
acceptable