In each sentence below, combine the two individual sentences into one sentence using a relative clause. Indicate whether the relative clause is restrictive or nonrestrictive by placing an “R” or “NR” in the blank at the end of the sentence.
The cat is in my yard again. The cat has a broken leg.
Free Willy was a cute move. Free Willy was a story about freedom.
This is a question from ultimate gmatclub grammer book.
The cat, that (or which) has the broken leg, is in my yard again. _NR_
Free Willy, that (or which) was a story about freedom, was a cute movie. NR
How come we are using that in this? Isnt usage of 'that' possible only with restrictive clauses!