claim: Ann Biderman is a Canadian.
evidence: Detlev Kittstein -LRB- 24 February 1944 in Sprottau -- 3 May 1996 in Frankfurt -RRB- was a German field hockey player who competed in the 1968 Summer Olympics and in the 1972 Summer Olympics .. field hockey. field hockey. Sprottau. Szprotawa. Frankfurt. Frankfurt. German. Germany. 1968 Summer Olympics. 1968 Summer Olympics. 1972 Summer Olympics. 1972 Summer Olympics