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 girl in a pink shirt is sprawling her limbs out in midair. Sentence 2: A man dressed in a Santa suit is climbing up a large concrete building.

A: 0
****
Q: Sentence 1: A woman is cracking eggs into a bowl. Sentence 2: A woman is placing skewers onto a rack.

A: 1
****
Q: Sentence 1: New Syria opposition chief wants no-strings aid Sentence 2: Syria opposition unites as Israel fires warning shots

A:
1
****