With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Bangladesh is in the Bengal region.
text_B: Sir Sydney John Chapman KCB CBE -LRB- 20 April 1871 -- 29 August 1951 -RRB- was an English economist and civil servant .. KCB. Order of the Bath. CBE. Order of the British Empire. He was Chief Economic Adviser to HM Government from 1927 to 1932 .
not_related.