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.

[Q]: Sentence 1: Two die in Syria violence after UN monitors land Sentence 2: Two year doping ban for Contador
[A]: 0


[Q]: Sentence 1: Two people are riding a motorcycle. Sentence 2: Two people are riding a bike.
[A]: 2


[Q]: Sentence 1: A panda bear is laying down. Sentence 2: A baby panda relaxes on some logs.
[A]:
3