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

[EX Q]: Sentence 1: A dog is jumping up in the air to catch a toy. Sentence 2: A black dog jumps in the air to catch a toy.
[EX A]: 4

[EX Q]: Sentence 1: Iran, six global powers sign landmark nuclear deal Sentence 2: Iran, world powers agree nuclear deal
[EX A]:
5