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.

[EX Q]: Sentence 1: Clinton ready to fight for Obama Sentence 2: Clinton a tough act for Obama to follow
[EX A]: 1

[EX Q]: Sentence 1: Osama Bin Laden Wives to Be Jailed Sentence 2: Osama Bin Laden movie to be filmed in India
[EX A]: 1

[EX Q]: Sentence 1: Syria journalists rescue bid fails Sentence 2: Journalists smuggled out of Homs
[EX A]:
1