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 dog rides a skateboard. Sentence 2: A dog is riding a skateboard.
[A]: 5


[Q]: Sentence 1: A small dog runs through an obstacle course. Sentence 2: A small dog jumping over an obstacle.
[A]: 4


[Q]: Sentence 1: The bird is sitting on the branch. Sentence 2: The sheep is standing under the trees.
[A]:
0