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.

[Q]: Sentence1: Hello i noticed I have a small black dot  on my gum the mark takes up the surface area of the very tip of my gum tissue.The part looks like a triangle? 
 Sentence2: What could cause a small, blackish dot at the tip of my gums?
[A]: Similar


[Q]: Sentence1: Is it contraindicated to insert a urinary catheter into a patient who has a myocardial infarction? 
 Sentence2: I am looking for some information- Is it safe to insert a urinary catheter in a patient with myocardial infarction or are there any risks involved?
[A]: Similar


[Q]: Sentence1: I've had this bruise on my thigh for at least two months, and it still hasn't healed. Could it be skin cancer? 
 Sentence2: I have a bruise on my thigh for 2 months and it is not healing. May I know if it is skin cancer?
[A]:
Similar