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.

Sentence 1: Two dogs running down a beach. Sentence 2: two dogs running on the beach
5

Sentence 1: I agree completely I am hoping he is into a second term of office. Sentence 2: I am hoping he is into a second term of office.
4

Sentence 1: A woman plays the guitar. Sentence 2: A man sings and plays the guitar.

2