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: Are there any serious after-effects of a heroin overdose?
Sentence2: Can calling 911 help if my friend has overdosaged on heroin?
[A]: Dissimilar

[Q]: Sentence1: Please provide advice on discontinuing hctz (hydrochlorothiazide) after developing petechiae on my arms. I have been taking hctz (hydrochlorothiazide) for 3 months and this just started.
Sentence2: I've been taking hydrochlorthiazide for almost 3 months now and recently noticed some petechiae on my arms. Could it be related to the medication?
[A]: Similar

[Q]: Sentence1: I had 2 chest x rays done 2 different times with portable mechine I seen the image but did not see the ribs just lungs is that possible.
Sentence2: My chest X-rays keep showing only my lungs but not my ribs! How is that possible?
[A]:
Similar