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: At times it stings/strikes me inside my head? Is it cause of sleep or cold or something else? 
 Sentence2: I have not been sleeping well for the past few days because of a cold. Can this cause a sharp striking/stinging pain in my head?
Example Output: Similar

Example Input: Sentence1: I took Plan B on Feb. 11th, 2015 after having unprotected sex two days before. Now tonight I had protected sex, but the condom broke. I am wondering if the Plan B is still effective 5 days later? And if not, is it safe to consume another Plan B pill? 
 Sentence2: Hello doctor, I am of 18 years age and I had unprotected sex. Can I take Plan B? Do I need a prescription?
Example Output: Dissimilar

Example Input: Sentence1: I have a twitching feeling and ocasional pain that comes and goes in the upper right abdomen right below my right breast what could this be? Few weeks 
 Sentence2: For the past few days, my upper right side of the abdomen has been feeling weird. There is mild pain under the right breast. There also seems to be some twitching. Can it be gastritis?
Example Output:
Similar