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.

Example Input: Sentence1: What if delayed ejaculation is due to psycological reason? Is there any treatment 
 Sentence2: How do the doctors conclude that delayed ejalculation is due to psychological reasons?
Example Output: Dissimilar

Example Input: Sentence1: Does lung cancer always effect oxygen levels. 
 Sentence2: I was diagnosed with lung cancer and I have been on therapy. My oxygen saturation levels have been around 90% and I am worried if this is ever going to improve. Should I ask my doctor if therapy needs to be changed?
Example Output: Dissimilar

Example Input: Sentence1: I pricked myself on a knockout rose bush last friday. The swelling has gone down some, but it still hurts/itches in two spots. Is it infected? 
 Sentence2: I had pricked myself on a knock out rose bush at two spots, the swelling has gone down but it  stills hurts and itches. I know, it's not infected but what should I do? 
Example Output:
Dissimilar