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: myanmar government has stated myanmar will become opium-free by 2014. Sentence 2: myanmar government stated myanmar is on track to be drug-free by 2014.

Answer: 5


Question: Sentence 1: A boy is crawling into a dog house. Sentence 2: A cat is playing on the floor.

Answer: 0


Question: Sentence 1: A man removes a couple of toaster scrambles from a plastic packet. Sentence 2: A man removes food from a bag.

Answer:
2