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 chicken is pecking at a dead mouse. Sentence 2: A rooster pecks at a dead mouse.
4

Sentence 1: turkmenistan borders afghanistan. Sentence 2: sistan-baluchestan borders afghanistan and pakistan.
2

Sentence 1: The lady cracked two raw eggs. Sentence 2: The woman is cracking eggs into a bowl.

3