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: 2 dead, 2 injured in Nevada middle school shooting Sentence 2: Nevada: 2 dead, 2 hurt in middle school shooting
[A]: 5


[Q]: 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.
[A]: 1


[Q]: Sentence 1: A man is speaking on a stage. Sentence 2: A man is speaking at a podium.
[A]:
3