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: What are the causes of lower back pain in women? 
 Sentence2: My mom often says she has lower back ache. My aunt complains of the same. What could be the causes of lower back ache in women?

A: Similar
****
Q: Sentence1: Out of the blue, my heart will just get this pain. It really hurts. Why? 
 Sentence2: I am having on/off chest pain and sometimes it appears out of the blue. Can you suggest any measures to subside it? 

A: Dissimilar
****
Q: Sentence1: How can a person know if they have chronic fatigue syndrome? 
 Sentence2: What is the treatment of chronic fatigue syndrome?

A:
Dissimilar
****