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.
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Question: Sentence 1: Two die in Syria violence after UN monitors land Sentence 2: Two year doping ban for Contador

Answer: 0


Question: Sentence 1: Nokia apologises for 'faked' ad Sentence 2: US waives riders for Pak aid

Answer: 0


Question: Sentence 1: A white and brown dog playing with a black toy. Sentence 2: A white and brown dog is playing tug-o-war.

Answer:
3