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.

Example Input: Sentence 1: A woman is cutting a leak. Sentence 2: A woman is slicing a leek.
Example Output: 4

Example Input: Sentence 1: A black and brown dog runs through the woods. Sentence 2: A dog running through the woods.
Example Output: 4

Example Input: Sentence 1: The black and white bull is looking at the camera. Sentence 2: A black and white dog looking at the camera.
Example Output:
2