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: Australian unemployment up to 5.1 percent Sentence 2: French unemployment rate rises to 10 percent

Ex Output:
1


Ex Input:
Sentence 1: A mostly black train on a track. Sentence 2: A car parked in front of train tracks.

Ex Output:
1


Ex Input:
Sentence 1: Nine killed in gun attack in Pakistan Sentence 2: Five million citizens get unofficial salary in Ukraine

Ex Output:

0