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 black dog with a blue collar is running in the snow. Sentence 2: A black dog wearing a blue collar is running through the snow.

Output: 5


Input: Consider Input: Sentence 1: A bird sits in a tree. Sentence 2: A bird sits in a leafless tree.

Output: 4


Input: Consider Input: Sentence 1: Car bomb kills 20 in northwest Syria Sentence 2: Car bomb in northern Syria kills 20


Output: 5