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: Obama moves to fill Fed board, taps Fischer to be No. 2 Sentence 2: Obama voices willingness to talk with GOP on budget

Ex Output:
0


Ex Input:
Sentence 1: The two dogs blend in with the stuff animals. Sentence 2: Two dogs sit on a couch with many stuffed animals.

Ex Output:
3


Ex Input:
Sentence 1: A row of locomotives on a siding in a field. Sentence 2: A dark brown horse standing in a field.

Ex Output:

1