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.

Sentence 1: A boy goes down an inflatable slide. Sentence 2: A boy in red slides down an inflatable ride.
4

Sentence 1: A black dog with a blue collar is running in the snow. Sentence 2: A black dog wearing a blue collar is running through the snow.
5

Sentence 1: A man is coming out into the water. Sentence 2: A man rises from a swamp.

3