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 woman with a viking hat on. Sentence 2: Smiling woman sitting wearing a viking hat.

A: 4
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Q: Sentence 1: A woman is adding oil on fishes. Sentence 2: A woman is pouring water on fish.

A: 2
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Q: Sentence 1: Jury nullification does not mean that a law is unconstuitutional. Sentence 2: Jury nullification means a law isn't Constitutional?

A:
4
****