With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: John Lennon has 25 number one singles on the US Hot 100 chart.
text_B: Major David John Croft OBE -LRB- born David John Andrew Sharland ; 7 September 1922 -- 27 September 2011 -RRB- was an English writer , producer and director .. Major. Major ( United Kingdom ). OBE. Order of the British Empire. David Croft is particularly noted for producing and co-writing a string of popular BBC sitcoms with Jimmy Perry and Jeremy Lloyd including Dad 's Army , Are You Being Served ?. Jimmy Perry. Jimmy Perry. Jeremy Lloyd. Jeremy Lloyd. , It Ai n't Half Hot Mum , Hi-de-Hi !. and ` Allo ` Allo !
not_related.