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.

Q: Sentence 1: chinese authorities were not immediately available for comment. Sentence 2: godzhayev and godzhayev's lawyers were not immediately available to comment.

A: 1
****
Q: Sentence 1: the international atomic energy agency may have been tricked because it was eager for a deal. Sentence 2: the international atomic energy agency plan draws out negotiations for many months.

A: 2
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Q: Sentence 1: A monkey is brushing a bull dog. Sentence 2: A monkey brushes a dog.

A:
4
****