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 to do if I have stones in both of my kidneys one is a 7mm. If I just leave the stones alone will they? 
 Sentence2: Do small kidney stones, about 7-8mm get cured if left alone?

A: Similar
****
Q: Sentence1: What muscles contribute to lower back pain? 
 Sentence2: I lifted heavy weights 2 days ago. I have been expeirencing severe lower back ache ever since. I believe I may have strained my lower back muscles but I am worried it may have caused disc bulge in my lower spine. What could be the chances?

A: Dissimilar
****
Q: Sentence1: 16, never had intercourse, no STDs known, vaginal irritation, sometimes pain, not much pain with urination, irritation through the entire day. 
 Sentence2: I am a virgin and never had an intercourse. Can I get STDS?

A:
Dissimilar
****