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: Usain Bolt wins 200m – Steven Howard reaction Sentence 2: Facebook mobile gains drive revenue growth: reaction
0

Sentence 1: A man is scaling a fish. Sentence 2: A man pours some cooking oil into a pot.
1

Sentence 1: A girl in a black desktop holds up an open box of Corn Flakes and a carton of milk. Sentence 2: A girl wearing black shorts and boots is standing next to a blue motorcycle.

0