instruction:
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: 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?
answer:
Similar


question:
Sentence1: I'm bleeding from penis for no reason. What could this be? 
 Sentence2: I have some mild bleeding from the penis. Can this be a sign of a UTI?
answer:
Dissimilar


question:
Sentence1: Posterior vitreous detachments eye-p.v.d., what is this? 
 Sentence2: I saw my eye doctor and he said that flashes in my vision are due to posterior viterous detachment. I am not sure what it is... Can you please help me?
answer:

Similar