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: a cyclist is making his bike jump between two rocks. Sentence 2: A man jumps his bicycle in the air between two rocks.

Output: 4


Input: Consider Input: Sentence 1: A man is paddling a canoe. Sentence 2: A man is playing a harp.

Output: 1


Input: Consider Input: Sentence 1: He planned to stay all day until the river crested, which was forecast for late last night. Sentence 2: He and the other lawyers planned to stay until the river starts receding.


Output: 2