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: Why people with runny nose tend to have cracked lips? 
 Sentence2: I have a runny nose, congestion and a headache. My lips are also dry because of the dry weather. What can I try for all of these symptoms?

Answer: Dissimilar


Question: Sentence1: I have been on klonopin (clonazepam) for my gad for about 4 years, 2mg a day. How long will the withdrawals last? Or when is it out of my system? 
 Sentence2: Hello doctor, I am diagnosed with GAD and was given Klonopin an I have been on the medication for few months. Now, the medication is not helping and my doctor wants to change me to celexa. Can I know about the side effects and efficacy of each? Which medication do you think is better?

Answer: Dissimilar


Question: Sentence1: I've had a bilateral neck dissection for thyroid cancer in 2011. My neck has been swollen for 3 years. Should I see a lymph node specialist? 
 Sentence2: Is surgery needed to remove an enlarged thyroid gland?

Answer:
Dissimilar