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: Can you take l-lysine while trying to become pregnant? 
 Sentence2: Is L-lysine safe while trying for conception?

A: Similar
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Q: Sentence1: Is it okay for 18 year olds to take thermogenics? 
 Sentence2:  I have heard a lot of 18 year old taking thermogenics. Could you tell me what we mean by thermogenics? 

A: Dissimilar
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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
****