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: And I'm your friend Mitt. Sentence 2: Your good friend Mitt.
4

Sentence 1: People are standing on an escalator moving up. Sentence 2: People ride up an escalator.
5

Sentence 1: Sorkin, who faces charges of conspiracy to obstruct justice and lying to a grand jury, was to have been tried separately. Sentence 2: Sorkin was to have been tried separately on charges of conspiracy and lying to a grand jury.

5