With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Fifty Shades of Grey set the record in the UK as the fastest-selling paperback of all time.
text_B: Warren Blank -LRB- born July 24 , 1948 -RRB- is an American author , teacher , and businessman .. He is best known for authoring books on leadership , such as The 108 Skills of Natural Born Leaders and The 9 Natural Laws of Leadership .. The 108 Skills of Natural Born Leaders. The 108 Skills of Natural Born Leaders. The 9 Natural Laws of Leadership. The 9 Natural Laws of Leadership. He is also the founder and president of The Leadership Group , a leadership training and organizational development firm based in Vero Beach , Florida and Chapel Hill , North Carolina. The Leadership Group. The Leadership Group. Vero Beach. Vero Beach. Florida. Florida. Chapel Hill. Chapel Hill, North Carolina. North Carolina. North Carolina
not_related.