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.

Input: Consider Input: Sentence 1: Fallen US firefighters brought home Sentence 2: Wall Street ends slightly lower

Output: 0


Input: Consider Input: Sentence 1: A group of penguins is walking. Sentence 2: A large amount of penguins are heading to the ocean.

Output: 3


Input: Consider Input: Sentence 1: A man in a red jacket holds his bike for the picture. Sentence 2: A woman in a red jacket is video taping a natural landscape.


Output: 0