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: A white bus with the word Julia is near water and a big ship. Sentence 2: A white bus with water and a barge in the background.

Output: 4


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: amnesty international is a rights group based in london. Sentence 2: the international institute for strategic studies is located in london.


Output: 1