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: A woman cracks two eggs into a glass bowl. Sentence 2: A woman is cracking an egg into a bowl.

Ex Output:
4


Ex Input:
Sentence 1: A man riding a white horse in an arena. Sentence 2: A man riding a white horse.

Ex Output:
4


Ex Input:
Sentence 1: Last night Japanese forces attacked Hong Kong. Sentence 2: Last night Japanese forces attacked the Philippine Islands.

Ex Output:

3