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: What muscles contribute to lower back pain? 
 Sentence2: I lifted heavy weights 2 days ago. I have been expeirencing severe lower back ache ever since. I believe I may have strained my lower back muscles but I am worried it may have caused disc bulge in my lower spine. What could be the chances?
answer:
Dissimilar


question:
Sentence1: Am taking Duphaston day 11 to day 25 when do expect my period? 
 Sentence2: When shall I expect my period if I am taking Duphaston from Day 11th to Day 25th?
answer:
Similar


question:
Sentence1: What is the difference between a gastric sleeve and the Roux-en-Y surgery? 
 Sentence2: Do bariatric surgeries like gastric sleeve or Roux-en-Y surgery actually work in the long term?
answer:

Dissimilar