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 might cause a slightly dilated common bile duct when all of the other organs look good? 
 Sentence2: What can be done if the common bile duct is dilated?

A: Dissimilar
****
Q: Sentence1: What is the use of the drug lovenox (enoxaparin)? 
 Sentence2: What are common side-effects to expect with lovenox?

A: Dissimilar
****
Q: Sentence1: When after a sinus infection clears up will brain fog go away? 
 Sentence2: I haven't been sleeping well for the last couple of weeks. Can it result in brain fog?

A:
Dissimilar
****