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 toy train is striking a toy car. Sentence 2: A toy train strikes a toy car.
[A]: 5


[Q]: Sentence 1: A woman is dancing and singing with other women. Sentence 2: A woman is dancing and singing in the rain.
[A]: 3


[Q]: Sentence 1: The man sang on stage into the microphone. Sentence 2: A man in a suit is standing at a microphone and singing.
[A]:
4