instruction:
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.
question:
Sentence1: Why is my period blood dark brown, stopped after 4 hrs. Is this a period? 
 Sentence2: What does brown vaginal discharge mean?
answer:
Similar


question:
Sentence1: I do unprotected sex with a prostitute after 28 days I go for hiv duo test the result is non reactive 0.07 is it conclusive? 
 Sentence2: How is HIV spread and when is the right time to take a HIV duo test?
answer:
Dissimilar


question:
Sentence1: I hurt my knee and heard a pop and now it hurts to go up and down stairs and hurts when walking on it or to move it certain ways should I see my docto? 
 Sentence2: Should I see my doctor if I heard a pop in my knee after an injury and now it hurts to go up and down the stairs and hurts to walk on it?
answer:

Similar