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.

Ex Input:
Sentence 1: Two dogs running down a beach. Sentence 2: two dogs running on the beach

Ex Output:
5


Ex Input:
Sentence 1: A small plane parked at an airfield with a cloudy sky overhead. Sentence 2: A small white plane parked in an airport on a cloudy day.

Ex Output:
5


Ex Input:
Sentence 1: A skateboarder does tricks on a half-pipe. Sentence 2: A man skateboards on a half pipe.

Ex Output:

4