With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Miami Beach had a total population of over 90,000 in 2010.
text_B: David Chapman -LRB- born 22 March 1965 -RRB- is an Australian sports shooter who has competed at two Olympic Games .. sports. Shooting sports. shooter. shooting. He has competed in the 25 metre rapid fire pistol at the 2000 Summer Olympics in Sydney , finishing in 20th place .. 25 metre rapid fire pistol. Shooting at the 2000 Summer Olympics – Men's 25 metre rapid fire pistol. 2000 Summer Olympics. 2000 Summer Olympics. He returned to the Olympic team for the 2012 London Olympics where he competed in the same event , finishing 18th .. 2012 London Olympics. 2012 Summer Olympics. same event. Shooting at the 2012 Summer Olympics – Men's 25 metre rapid fire pistol. His daughter Hayley Chapman also competed at London , in the 25 metre pistol event .. Hayley Chapman. Hayley Chapman. 25 metre pistol. Shooting at the 2012 Summer Olympics – Women's 25 metre pistol
not_related.