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: I took Plan B on Feb. 11th, 2015 after having unprotected sex two days before. Now tonight I had protected sex, but the condom broke. I am wondering if the Plan B is still effective 5 days later? And if not, is it safe to consume another Plan B pill? 
 Sentence2: Hello doctor, I am of 18 years age and I had unprotected sex. Can I take Plan B? Do I need a prescription?

Answer: Dissimilar


Question: Sentence1: Has anyone else had nasty side effects from taking alendronate/fosamax for osteoporosis? 
 Sentence2: I have been prescribed alendronate/fosamax for ostoporosis. Does these medication gives you side effects? Has anyone from your practice has reported about them?

Answer: Similar


Question: Sentence1: What can I do for a dislocated jaw? 
 Sentence2: Can OTC medications help treat a dislocated jaw?

Answer:
Dissimilar