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.

[Q]: Sentence1: How can I prevent orthostatic hypotension? 
 Sentence2: What are the symptoms of orthostatic hypotension?
[A]: Dissimilar


[Q]: Sentence1: The cause of my first pregnancy miscarriage seemed to b a bleed sac above my baby at 6 1/2 weeks. Is there anything I can do to prevent this next time. 
 Sentence2: If a woman had a miscarriage in a previous pregnancy, will she have one again the second time around?
[A]: Dissimilar


[Q]: Sentence1: Is it normal to have a low sex drive after having three c sections? 
 Sentence2: Will my 4th will also be a C-section if my previous 3 have been cesareans? 
[A]:
Dissimilar