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 young man and woman sitting on a bench outside are kissing. Sentence 2: The man and woman sitting on a bench are kissing.

Output: 5


Input: Consider Input: Sentence 1: Two green birds fly towards a wooden telephone pole. Sentence 2: Two green birds flying above the telephone wires.

Output: 3


Input: Consider Input: Sentence 1: Sri Lanka seek one-day revival against Pakistan Sentence 2: Senior journalist killed in Pakistan


Output: 1