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: French parliament backs reform of law on prostitution Sentence 2: Russian parliament to consider ban on U.S. adoptions

Output: 1


Input: Consider Input: Sentence 1: Fallen US firefighters brought home Sentence 2: Wall Street ends slightly lower

Output: 0


Input: Consider Input: Sentence 1: police arrested 2 honduran drug trafficking suspects. Sentence 2: bulgarian police arrest head of drug trafficking group.


Output: 1