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: Two girls are sitting in front of a statue. Sentence 2: Two blonde girls are sitting next to a statue
Example Output: 4

Example Input: Sentence 1: People exploited the laws. Sentence 2: People bent the laws.
Example Output: 3

Example Input: Sentence 1: Someone is pouring oil into a skillet. Sentence 2: Someone is pouring milk into a blender.
Example Output:
2