With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Neil deGrasse Tyson wrote for the "Universe" column of Penthouse.
text_B: Acid perfusion test , also called the Bernstein test , is a test done to reproduce the pain when the lower esophagus is irrigated with an acid solution in patients with GERD -LRB- gastroesophageal reflux disease -RRB- .. pain. pain. esophagus. esophagus. GERD. GERD. gastroesophageal reflux disease. gastroesophageal reflux disease. There will be a negative result in normal people .. Bernstein test is obsolete nowadays .. 24 hour pH monitoring is the gold standard for GERD .. GERD. GERD. However , the initial management is with proton pump inhibitors .. If the patient does not respond to it , and continues to have symptoms of GERD , i.e. heartburn , hoarseness , chronic cough , then 24 hr pH monitoring should be considered .. GERD. GERD. Category  : Medical tests
not_related.