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 had a root canal 3 months ago but tooth is still sensitive to hot. What could be the reason? 
 Sentence2: I have cavities in my tooth and my dentist advised to get root canal done. Can you tell me if the procedure is painful and how much time will it take?
answer:
Dissimilar


question:
Sentence1: 3wks postop GB removal.very nauseous, pain, and headache.getting an ultrasound tomorrow to check for fluids.could this be the cause? 
 Sentence2: What are some post operative effects of gall bladder removal? Can one experience nausea or pain a while after the surgery?
answer:
Dissimilar


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