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.

Input: Consider Input: Sentence 1: Tropical Storm Isaac boosts jobless claims Sentence 2: Tropical Storm Joyce forms, stays in open Atlantic

Output: 1


Input: Consider Input: Sentence 1: the international atomic energy agency has no access to people, documents, sites. Sentence 2: the international atomic energy agency is based in

Output: 1


Input: Consider Input: Sentence 1: We don't know if any will be SARS," said Dr. James Young, Ontario's commissioner of public safety. Sentence 2: We're being hyper-vigilant, said Dr. James Young, Ontario's commissioner of public safety.


Output: 2