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 child with his hands on his head. Sentence 2: A little boy stands with his hands on top of his head
[EX A]: 4

[EX Q]: Sentence 1: The men are playing cricket. Sentence 2: The men are playing basketball.
[EX A]: 2

[EX Q]: Sentence 1: Two birds are perched on a metal band. Sentence 2: Two small birds perched on a metal bar.
[EX A]:
4