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: Five cows are grazing beside the road. Sentence 2: Several sheep grazing in the field.

Output: 1


Input: Consider Input: Sentence 1: A man is playing a flute. Sentence 2: A man is playing a bamboo flute.

Output: 4


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