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: Syrian opposition offers Assad truce in Homs for duration of Ramadan Sentence 2: Syrian opposition offers Assad's forces truce for duration of Ramadan
5

Sentence 1: Egypt votes on final day of presidential election Sentence 2: Polls open in France for presidential election
1

Sentence 1: The couple danced in the church. Sentence 2: A couple slow dances.

3