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: The American Stock Exchange biotech index .BTK surged 5 percent. Sentence 2: The Philadelphia Stock Exchange's semiconductor index .SOXX jumped 6.10 percent.
1

Sentence 1: A Macintosh computer sitting on the floor. Sentence 2: a computer on the floor.

4