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 woman is shooting a machine gun. Sentence 2: The man is shooting a gun.
2

Sentence 1: A woman is frying a food. Sentence 2: A woman is deep frying food.
4

Sentence 1: Apple revenue misses again, iPhone disappoints Sentence 2: U.S. trade agency rules for Samsung, bans iPhone 4 imports

1