With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Robert Redford is American.
text_B: Tranmere Rovers F.C. played the 1931 -- 32 season in the Football League Third Division North .. Third Division North. Football League Third Division North. Football League Third Division North. Football League Third Division North. It was their 11th season of league football , and they finished 4th of 21 .. football. Association football. They reached the Third Round of the FA Cup .. FA Cup. FA Cup
not_related.