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: What does it mean to have sporadic headaches?
Sentence2: I have tension headaches and have been under lot of stress. What do you recommend i do?
[A]: Dissimilar

[Q]: Sentence1: Had unpro sex the last day iovulated 30th he cummed 2x in me , my per was due 13 but igot it on the 14 howcome ididnt get pregnant ?:/iwant a baby
Sentence2: My period is late by 5 days and had protected sex during the last cycle and he did not ejaculate inside me. I also took a morning after pill. What are my chances of pregnancy?
[A]: Dissimilar

[Q]: Sentence1: Is a brain injury/ brain damage considered to be the same as a mental illness?
Sentence2: May I know if brain injury and damage is same as mental illness?
[A]:
Similar