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 riding a small bicycle. Sentence 2: A man is doing a wheelie on a bike.

A: 3
****
Q: Sentence 1: Fighting continued until midnight, western rebel commander Ousmane Coulibaly told Reuters by satellite phone on Sunday. Sentence 2: They ransacked and burned the two villages completely, rebel commander Ousmane Coulibaly told Reuters by satellite phone from the bush.

A: 3
****
Q: Sentence 1: A swimmer is doing the backstroke in the swimming pool. Sentence 2: a person doing the back stroke in a swimming pool

A:
5
****