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: Plastic toys are floating in water. Sentence 2: The ladies are performing a dance.

Ex Output:
0


Ex Input:
Sentence 1: A dog is jumping up in the air to catch a toy. Sentence 2: A black dog jumps in the air to catch a toy.

Ex Output:
4


Ex Input:
Sentence 1: Three sheep on a dirt road viewed from a passenger vehicle. Sentence 2: Three sheep in middle of gravel road.

Ex Output:

3