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: 5 days late of period took Plan B emergency contacepive 5 days before expected period went through 3 pregnect test all negative am I pregnet? 
 Sentence2: Hello doctor, I had unprotected intercourse an hour back. When can I take plan B and what are the side effects?
answer:
Dissimilar


question:
Sentence1: How is substance abuse diagnosed? 
 Sentence2: Could you tell me, how substance abuse is diagnosed? 
answer:
Similar


question:
Sentence1: What happens if HPV goes away on its own, can it still be spread? 
 Sentence2: What are the risk factors of HPV infection?
answer:

Dissimilar