TASK DEFINITION: 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.
PROBLEM: 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?

SOLUTION: Similar

PROBLEM: Sentence1: If u have had giardia and had it treated, but your liver enzymes rose what could that be a indication of? 
 Sentence2: I drank water from a stream and read that it could cause giardiasis. I am a little worried since I have been experiencing some mild abdominal pain on the right side, could it be affecting my liver?

SOLUTION: Dissimilar

PROBLEM: Sentence1: Can i get systematic effects from long term use of cortizone (hydrocortisone) 10 otc? 
 Sentence2: Is cetirizine available OTC? What side effects can I expect from using it?

SOLUTION:
Dissimilar