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.
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Question: Sentence1: What are some good lumbar strain exercises? 
 Sentence2: Do exercises such as dead lifts strain the lumbar spine?

Answer: Dissimilar


Question: Sentence1: How long does it take for sleeping meds to get out of your system? How long does it take anesthesia had to get out of your system. 
 Sentence2: Can sleep medications be used for anesthesia?

Answer: Dissimilar


Question: Sentence1: My gf had her period then after 2days. We had sex she took planb its been 2week already she hasnt had her period is it because she just had her period? 
 Sentence2: My girl friend has period and after 2 days she took plan B and it has been 2 weeks already and she did not have  period. May I know what is the cause? 

Answer:
Similar