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: A man is walking in the rain. Sentence 2: A man and woman is walking in the grand.

A: 2
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Q: Sentence 1: Tokyo to host 2020 Olympic Games Sentence 2: Wrestling to feature in 2020 Tokyo Olympics

A: 1
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Q: Sentence 1: Russ Britt is the Los Angeles Bureau Chief for CBS.MarketWatch.com. Sentence 2: Emily Church is London bureau chief of CBS.MarketWatch.com.

A:
2
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