With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Venus Williams have won 14 Grand Slam double titles in the French Open.
text_B: Luke Farmer -LRB- born 25 September 1980 -RRB- is an Australian rules football field umpire in the Australian Football League .. Australian rules football. Australian rules football. field umpire. Umpire ( AFL ). Australian Football League. Australian Football League. He has umpired over 100 games in the AFL since his debut in the match between Adelaide and Essendon at AAMI Stadium on 1 April 2007 .. Adelaide. Adelaide Football Club. Essendon. Essendon Football Club. AAMI Stadium. AAMI Stadium. He is currently a secondary school physical education teacher at Christ Church Grammar School , Western Australia , and has a Bachelor of Science and a Diploma in Education .. Christ Church Grammar School. Christ Church Grammar School
not_related.