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: Is mental illness like bipolar hereditary? 
 Sentence2: Does bipolar disorder have any hereditary influence?
answer:
Similar


question:
Sentence1: At times it stings/strikes me inside my head? Is it cause of sleep or cold or something else? 
 Sentence2: I have not been sleeping well for the past few days because of a cold. Can this cause a sharp striking/stinging pain in my head?
answer:
Similar


question:
Sentence1: I was diagnosed w/ Chlamydia on 9/29/2015. Treated the same day. Tested on 11/16/2015, came back positive. I haven't had sex since the 1st test. How? 
 Sentence2: What is the treatment for recurrent Chlamydial infections?
answer:

Dissimilar