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.
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Question: Sentence1: 34 year old male. Graying hair. Has been stressful past year of change in life. Does stress affect this in men? Any advice to slow graying/thinning? 
 Sentence2: I am a young male and have got gray hair. Can I use a hair dye? 

Answer: Dissimilar


Question: Sentence1: I never had any pain before/during my period. The other day I started having pain in the pelvic area. At night it's so excruciating I can barely move. 
 Sentence2: I was diagnosed with chlamydia and gonorrhea last week and cannot afford treatment now. I have severe lower abdominal pain and pelvic pain. What can I do?

Answer: Dissimilar


Question: Sentence1: Why am I having collapsed lung after heart surgery? 
 Sentence2: Why does one need to have a heart surgery?

Answer:
Dissimilar