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: Can dementia cause ANS dysfunction? If so how? 
 Sentence2: How can dementia cause ANS dysfunction?

Answer: Similar


Question: Sentence1: I can't see in the dark as well as others can? Do I need carrots or vitamin a? 
 Sentence2: I am scared that I might be nightblind as I cannot see in dark when everyone else can see. Do you think increasing intake of Vitamin A or carrots may help me?

Answer: Similar


Question: Sentence1: I'm having reoccuring eye pain and redness, what could be causes? 
 Sentence2: Can dry eyes cause pain and redness in the eye? If not, what are some other causes?

Answer:
Similar