Q: Valid English sentence (grammatically) or not: The curtain which Fred tore in rolling up was the kind gift of my maternal Aunt Priscilla.

A: acceptable

Q: Valid English sentence (grammatically) or not: What did Bill make the claim that he read in the syntax book?

A: unacceptable

Q: Valid English sentence (grammatically) or not: Neither of these men is worthy to lead Italy.

A:
acceptable