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: Does anyone know what can cause severe leg pain in both legs especially at night? 
 Sentence2: Why am I having severe pain in the legs at night?

Answer: Similar


Question: Sentence1: I hurt my foot somehow but I don't know what is wrong with it. What do I do? 
 Sentence2: A heavy brick fell on my foot yesterday and it hurts. Should I go see the doctor?

Answer: Similar


Question: Sentence1: My 6mo old niece has a pink round spot on each thigh in the same place. My sister is worried it's ring worm. It doesn't bother the baby any. Thoughts? 
 Sentence2: How long do most birthmarks stay for in infants?

Answer:
Dissimilar