With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Tatiana Maslany refused to star in Heartland.
text_B: Callinan is a surname .. Notable people with the surname include  :. Bernard Callinan -LRB- 1913 -- 1995 -RRB- , soldier and businessman. Bernard Callinan. Bernard Callinan. Damian Callinan , comedian. Damian Callinan. Damian Callinan. Graham Callinan -LRB- born 1982 -RRB- , hurler. Graham Callinan. Graham Callinan. Ian Callinan -LRB- born 1937 -RRB- , former Justice of the High Court of Australia. Ian Callinan. Ian Callinan. Ian Callinan -LRB- Australian footballer -RRB- -LRB- born 1982 -RRB- , footballer. Ian Callinan. Ian Callinan. John Callinan -LRB- born 1955 -RRB- , hurler. John Callinan. John Callinan
not_related.