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: What are side effects of cyclizine 50mg? 
 Sentence2: I have been experiencing dry mouth and diarrhea for the past 1 week. I have started taking Cyclizine about 10 days back. Could these symptoms be a side effect?

Answer: Similar


Question: Sentence1: I think I have what they call bipolar, and i can't afford therapy. What can I do? 
 Sentence2: I am currently undergoing therapy and taking medications for bipolar disorder. Is it safe to become pregnant?

Answer:
Dissimilar