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: turkmenistan borders afghanistan. Sentence 2: sistan-baluchestan borders afghanistan and pakistan.

Output: 2


Input: Consider Input: Sentence 1: They reported symptoms of fever, headache, rash and muscle aches. Sentence 2: Symptoms include a stiff neck, fever, headache and sensitivity to light.

Output: 2


Input: Consider Input: Sentence 1: A rabbi is talking. Sentence 2: A man is walking on a rope.


Output: 0