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.

Ex Input:
Sentence 1: A man and woman are Bollywood dancing. Sentence 2: A man an woman are dancing in the rain.

Ex Output:
2


Ex Input:
Sentence 1: Thai opposition protesters begin Bangkok shutdown Sentence 2: Thai protesters launch Bangkok 'shutdown'

Ex Output:
5


Ex Input:
Sentence 1: Moderate tremor in the Central Mediterranean Sentence 2: Iran: Moderate candidate wins presidential vote

Ex Output:

0