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 grey cat with green eyes looking into the camera. Sentence 2: A grey, black, and white cat looking at the camera.
[EX A]: 3

[EX Q]: Sentence 1: a bird lands in the water. Sentence 2: a boat floats in the water.
[EX A]: 1

[EX Q]: Sentence 1: Red double decker bus with hood open. Sentence 2: An old Red London double decker bus with its hood raised.
[EX A]:
4