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've had problems with cosntant headaches for 5 years, now they are more like migraines, I've see neurologists, eye specialists and no one has helped me? 
 Sentence2:  I have a history of constant headaches since 5 years. Seems like migraines recently. Consulting a local neurologist or an opthalmologist has not helped either.
Example Output: Similar

Example Input: Sentence1: I used a condom for sex. I checked for rips and it was fine, no rips. If it doesnt rip is it pretty much a sure bet effectiveness against stds? 
 Sentence2: What are my chances of getting pregnant and getting an STD if the condom rips off during sexual intercourse?
Example Output:
Dissimilar