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.
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Question: Sentence1: Dry, flaky skin on the outer skin of lips all the time. Why does this happen? 
 Sentence2: I have dry, chaped lips with a cold sore. How long does it take to heal?

Answer: Dissimilar


Question: Sentence1: How long after conception does implantation bleeding start? Last period 11/13-18 unprotected sex nov 25 
 Sentence2: Hello doctor, I am on birth control pills and I am sexually active. I am spotting now after 3 weeks and is it withdrawal bleeding or implantation bleeding? 

Answer: Dissimilar


Question: Sentence1: What kind of diseases or isorders could cause both symptoms of hypothyroidism and juvenile idiopathic arthritis? Or is one a complication of the other 
 Sentence2: My nephew has idiopathic juvenile arthritis and hypothyroidism as well. Do we need to take some special care of his diet? Are there any foods that we should avoid for him?

Answer:
Dissimilar