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: saferworld team leader on transfer controls and small arms roy isbister stated-- the eu embargo prohibits direct or indirect supply of military equipment for use in myanmar. Sentence 2: saferworld team leader on transfer controls and small arms roy isbister stated that -- the eu embargo explicitly states that no military equipment should be supplied either directly or indirectly for use in myanmar.

Ex Output:
5


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: People are standing on an escalator moving up. Sentence 2: People ride up an escalator.

Ex Output:

5