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 wet child shivers under a towel at a pool. Sentence 2: A wet child is shivering in a towel in front of a pool.
5

Sentence 1: In 2006, the group says the market will rebound 29.6 percent to $21.3 billion in sales. Sentence 2: In 2006, Asia Pacific will report growth of 7.9 percent to $81.8 billion.
2

Sentence 1: A cow is eating grass. Sentence 2: A cow is eating hay.

4