instruction: Is the next sentence syntactically and semantically acceptable?

I believed there to be three books on the subject.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

The analysis of Lucy took longer than that of Gomez.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Jean was given a prize.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Absolutely any pilot could be flying this plane.

response:
acceptable