With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Role Models is a nonprofit.
text_B: Professor Frank Horton FRS -LRB- 20 August 1878 - 31 October 1957 -RRB- was professor of physics at Royal Holloway College , London University from 1914 - 1946 and later Vice Chancellor of London University during the years of World War II from 1939 - 1945 .. Royal Holloway College. Royal Holloway, University of London. FRS. Fellow of the Royal Society. London University. London University. Vice Chancellor. Vice Chancellor
not_related.