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: The American Stock Exchange biotech index .BTK surged 5 percent. Sentence 2: The Philadelphia Stock Exchange's semiconductor index .SOXX jumped 6.10 percent.

Ex Output:
1


Ex Input:
Sentence 1: A person wearing a helmet rides a bike near a white structure. Sentence 2: A person wearing a bike helmet rides a bike on a path through trees.

Ex Output:
3


Ex Input:
Sentence 1: Little white dog wearing a leash jumping after a red ball. Sentence 2: A black and white dog returns a stick in the snow.

Ex Output:

1