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 and a woman laughing. Sentence 2: A man and a woman kiss.
[A]: 1


[Q]: Sentence 1: A baby monkey scratches itself. Sentence 2: The monkey scratched his tummy.
[A]: 3


[Q]: Sentence 1: shingarev said it is very difficult to make a nuclear weapon from the plutonium in this fuel. Sentence 2: donohue said it is very difficult to manipulate radioactive isotopes without leaving a trail.
[A]:
1