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 speaking in sign language. Sentence 2: A woman spices some seafood.
Example Output: 1

Example Input: Sentence 1: Someoen is cooking onions. Sentence 2: A man is swinging nunchucks.
Example Output: 0

Example Input: Sentence 1: Three freed in centre abuse probe Sentence 2: Three storey building collapses in Ebute Meta
Example Output:
0