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: A man plays a trumpet. Sentence 2: A man is playing a musical instrument.

A: 3
****
Q: Sentence 1: A man is taking some math classes. Sentence 2: A man is rinsing a steak.

A: 0
****
Q: Sentence 1: A man and a woman holding hands walking along the beach. Sentence 2: A man with a beard and a skullcap and a boy walk along the ocean's shore.

A:
2
****