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.
--------
Question: Sentence 1: A black and brown dog walks through the snow near a building. Sentence 2: An older man stands outside a old boarded up building.

Answer: 1


Question: Sentence 1: Two brown dogs are biting each other. Sentence 2: Two brown dogs biting each other on sand.

Answer: 4


Question: Sentence 1: US believes Syria has probably used chemical weapons Sentence 2: US believes Syrian government used chemical weapons

Answer:
5