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 Sympathetic Nerve Blocks effective at calming the sympathetic system which causes angina and migraines? If not, why not? Would seem logical.
Sentence2: Does an active sympathetic system cause angina and migraines? Wouldn't nerve blocks help in such cases?

A: Similar
****
Q: Sentence1: Why do my ears "pop" when I am weight lifting?
Sentence2: Is it normal for ears to pop if one lifts heavy weights?

A: Similar
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Q: Sentence1: Very large bruise at old scar about 29 yrs ago i had my appendix removed. Now i was changing shirts to day and i saw a very large bruise around the scar in about a 6 or 8" circle. It looks like a big explosion of blood in the circle.
Sentence2: I underwent appendectomy many years ago and now noticed a large bruise along the old scar area. Is this related to my past surgery?

A:
Similar
****