Evaluate the similarity between them and classify them into classes from 0-5 as follows:
0 : The two sentences are completely dissimilar.
1 : The two sentences are not equivalent, but are on the same topic.
2 : The two sentences are not equivalent, but share some details.
3 : The two sentences are roughly equivalent, but some important information differs/missing.
4 : The two sentences are mostly equivalent, but some unimportant details differ.
5 : The two sentences are completely equivalent, as they mean the same thing.

Q: Sentence 1: Ex-first lady Barbara Bush leaves Texas hospital Sentence 2: Former first lady Barbara Bush leaves hospital

A: 5
****
Q: Sentence 1: A woman with a knife is slicing a pepper. Sentence 2: A women slicing green pepper.

A: 4
****
Q: Sentence 1: Two boys are talking on the phone. Sentence 2: A woman is talking on a telephone.

A:
2
****