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: china is north korea's closest ally. Sentence 2: north korea is a reclusive state.

Output: 1


Input: Consider Input: Sentence 1: . Sinful people do not get to heaven. Sentence 2: Or sin is removed upon entry to heaven.

Output: 2


Input: Consider Input: Sentence 1: The lady chopped up the green onions. Sentence 2: The lady cut up a green onion.


Output: 5