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: Little white dog wearing a leash jumping after a red ball. Sentence 2: A black and white dog returns a stick in the snow.

A: 1
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Q: Sentence 1: A animal is eating. Sentence 2: The animal is hopping.

A: 0
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Q: Sentence 1: A little white curly haired dog runs across the pavement with a stick in its mouth. Sentence 2: A white curly haired dog runs with a stick in it's mouth.

A:
5
****