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 woman holding a small baby. Sentence 2: A smiling woman holding a small baby.
[EX A]: 4

[EX Q]: Sentence 1: Two men compete in a tire rolling race. Sentence 2: Two people flipped tractor tires in a race.
[EX A]: 3

[EX Q]: Sentence 1: the cfe treaty was signed in 1990. Sentence 2: the cfe treaty was established in 1990.
[EX A]:
5