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.

Q: Sentence1: How is substance abuse diagnosed? 
 Sentence2: Could you tell me, how substance abuse is diagnosed? 

A: Similar
****
Q: Sentence1: Just found out mother-in-law may have tuberculosis after an x-ray. She held our 9-week old baby last week. Should we be worried? 
 Sentence2: Is a 9 week old baby more prone to catching infections like Tuberculosis if they are touched and held by an infected person?

A: Similar
****
Q: Sentence1: What can cause me to be lightheaded/dizzy? 
 Sentence2: Is it normal to have lightheadedness and dizziness in early pregnancy?

A:
Dissimilar
****