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.
--------
Question: Sentence 1: a woman with a viking hat on. Sentence 2: Smiling woman sitting wearing a viking hat.

Answer: 4


Question: Sentence 1: A gorilla is playing the drums. Sentence 2: A monkey is playing drums.

Answer: 3


Question: Sentence 1: Double decker bus with the London Eye ferris wheel in background. Sentence 2: a brown double decker tour bus on a street with a ferris wheel behind it.

Answer:
4