In this task you are given a medical question pair hand-generated. Your task is to classify a given post into two categories 1) 'Similar' if the given two questions have a same connotation 2) 'Dissimilar' if the given two questions have a different connotation or meaning.

Example Input: Sentence1: Are Sympathetic Nerve Blocks effective at calming the sympathetic system which causes angina and migraines? If not, why not? Would seem logical. 
 Sentence2: Does an active sympathetic system cause angina and migraines? Wouldn't nerve blocks help in such cases?
Example Output: Similar

Example Input: Sentence1: I can't see in the dark as well as others can? Do I need carrots or vitamin a? 
 Sentence2: I am scared that I might be nightblind as I cannot see in dark when everyone else can see. Do you think increasing intake of Vitamin A or carrots may help me?
Example Output: Similar

Example Input: Sentence1: It's only three it doesn't hurt I might of thought I had touch something it's kind of pink I'm not sure it's freaking me out? 
 Sentence2: How can a mild rash be treated?
Example Output:
Dissimilar