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.

Q: Sentence 1: A chicken is pecking at a dead mouse. Sentence 2: A rooster pecks at a dead mouse.

A: 4
****
Q: Sentence 1: Wells’ other series include NBC’s ER and Third Watch. Sentence 2: Wells' other series include NBC's "ER" and "Third Watch."

A: 5
****
Q: Sentence 1: I'm so sorry to hear this Kelly. Sentence 2: I'm so sorry, Kelly.

A:
4
****