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.

Sentence 1: A man and woman are Bollywood dancing. Sentence 2: A man an woman are dancing in the rain.
2

Sentence 1: The gloves are off, said UNIFI official Rob O'Neill. Sentence 2: Unifi official Rob O'Neill said: "The gloves are off.
5

Sentence 1: Two women are posing for the camera and giving the thumbs up sign. Sentence 2: Two smiling young women giving the thumbs up sign.

4