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.

Input: Consider Input: Sentence1: What is liver failure and how is it treated? 
 Sentence2: My father has liver cirrhosis, how can he prevent it from turning into a full blown liver failure?

Output: Dissimilar


Input: Consider Input: Sentence1: If I have an astigmatism , could that be causing daily headaches? I do not wear glasses but i work on a p.C. All day and a lot of bright lighting. 
 Sentence2: What is the treatment for headaches caused by astigmatism?

Output: Dissimilar


Input: Consider Input: Sentence1: How low can hemoglobin go before you need a transfusion? 
 Sentence2: What is a normal blood Hemoglobin level?


Output: Dissimilar