With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Boston is considered a center of higher education in medicine.
text_B: Bernard Becker -LRB- August 21 , 1920 -- August 28 , 2013 -RRB- was professor emeritus of ophthalmology and visual sciences at Washington University 's School of Medicine in St. Louis .. emeritus. emeritus. ophthalmology. ophthalmology. School of Medicine. Washington University School of Medicine. St. Louis. St. Louis, Missouri. He was born in New York City .. Becker was internationally honored as an expert on the diagnosis and treatment of glaucoma and active in teaching and research .. glaucoma. glaucoma. For more than 35 years , he led Washington University 's department of ophthalmology .. ophthalmology. ophthalmology. In 1978 , students , patients , and colleagues raised funds in his honor , which now endow two faculty positions  : the Bernard and Janet Becker Professorship -LRB- presently held by Dr. David Beebe -RRB- and the Bernard Becker Professorship -LRB- presently unoccupied -RRB- .
not_related.