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: Can gabapentin work for headaches caused by trimethoprim. I have started taking 100mg gabapentin daily for 4 days and trimethoprim 200mg twice a day. 
 Sentence2: I was diagnosed with a urine infection for which I was given Trimethoprim 200 mg to be taken twie daily. I have developed headaches because of the medication. Would it be safe to take Gabapentin?
[A]: Similar


[Q]: Sentence1: 16, never had intercourse, no STDs known, vaginal irritation, sometimes pain, not much pain with urination, irritation through the entire day. 
 Sentence2: I am a virgin and never had an intercourse. Can I get STDS?
[A]: Dissimilar


[Q]: Sentence1: I am having a dull pain at my esophagus. Been burping a lot too. Feel slightly better if I take omeporazale. What should I do? 
 Sentence2: I have been prescribed Omeprazole for pain in the esophagus and burping and it helps me. I want to know if chronic acid reflux can turn into cancer.
[A]:
Dissimilar