instruction:
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.
question:
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?
answer:
Similar


question:
Sentence1: What can be done for really sharp pain in left ankle? 
 Sentence2: I have sharp pain in left ankle for last 3 days. I got hurt while playing a few days ago but there was no bleeding. What should I do for relief?
answer:
Similar


question:
Sentence1: I just found out today that I have chlamydia, but I breastfeed.  Is it possible that my child could have it to? 
 Sentence2:  I am on Azithromycin for a week for chlamydia and I had unprotected intercourse. Should I take another dose?
answer:

Dissimilar