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.

[EX Q]: Sentence 1: A dog is running along the grass. Sentence 2: A brown dog is running in the grass.
[EX A]: 4

[EX Q]: Sentence 1: The skinny cows are standing on the grass. Sentence 2: The white ducks are standing on the ground.
[EX A]: 1

[EX Q]: Sentence 1: The man is playing the wooden flute. Sentence 2: A little boy is vacuuming the floor.
[EX A]:
0