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: Is it normal for the stomach to increase in size after receiving cpr? 
 Sentence2: Does a CPR cause the stomach to increase in size?

SOLUTION: Similar

PROBLEM: Sentence1: How do I tell the difference between an allergy and a sinus infection? 
 Sentence2: Can you tell me some OTC medications for allergies and sinus infection?

SOLUTION: Dissimilar

PROBLEM: Sentence1: Can taking DEPO shot make you irritable? Is it normal to have brownish discharge while on it, but no period so far? It's been 22 days. 
 Sentence2: What are some side effects of depo shot? Can I be pregnant if I am not getting period while on the shot?

SOLUTION:
Dissimilar