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: The beagle is walking on the beach at the waterline. Sentence 2: A beagle walks along the calm shore.
4

Sentence 1: How do you know what's right and wrong? Sentence 2: How do you know which story is the right one?
2

Sentence 1: A man holds a small animal in one hand. Sentence 2: A man shows off a small monkey.

2