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: I'm wondering what is the best birth control? 
 Sentence2: Can birth control pills and emergency pills be taken together?
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: I have been tested for every STD everything came back normal the only problem is my pH is at 8 how do I lower to 4? 
 Sentence2: Hello doctor, how are you? I am having problem with my vaginal ph and it is at 8 and how to lower it? I am tested negative for STD. /
answer:

Similar