question: What is the name of that retired football manager that used to be a defender for Ajax?
answer: Jakob "Jaap" Stam
context: Title: Leo van Veen
  Passage: Leo van Veen (born 6 June 1946 in Utrecht) is a retired football (soccer) player from the Netherlands, who played for FC Utrecht, Los Angeles Aztecs, Ajax Amsterdam and RKC Waalwijk during his career.  Later on he became a football manager.  Van Veen played 555 games in the Eredivisie, scoring 174 goals.
  Title: Kristjan Glibo
  Passage: Kristjan Glibo (born 1 April 1982 in Bruchsal) is a German football manager and retired football defender or defensive midfielder, who currently is the manager of SV Sandhausen II.
  Title: Jaap Stam
  Passage: Jakob "Jaap" Stam (] ; born 17 July 1972) is a Dutch football manager and former player who is currently the manager of Reading.
  Title: Jan Poortvliet
  Passage: Jan Poortvliet (] ; born 21 September 1955) is a retired football defender from the Netherlands, who represented his native country at the 1978 FIFA World Cup in Argentina, wearing the number two jersey.  His biggest club successes came when he played for PSV Eindhoven in the mid- and late 1970s.  After his retirement in the early 1990s he became a football manager, who worked for clubs like FC Den Bosch, RBC Roosendaal and Stormvogels Telstar.
  Title: Vladimir Bigorra
  Passage: Vladimir David Bigorra López (born August 9, 1954) is a retired football defender from Chile, who represented his native country at the 1982 FIFA World Cup, wearing the number four jersey.  He played for several clubs in Chile, including Universidad Católica.  After his active football career Bigorra became a football manager.
  Title: Iván León
  Passage: Marlon Iván "El Chino" León y León (born 3 March 1967) is a Guatemalan football manager and retired football defender who has played over 10 years for Guatemala's national team.
  Title: 2008–09 AFC Ajax season
  Passage: During the 2008–09 season AFC Ajax participated in the Dutch Eredivisie, the KNVB Cup and the UEFA Cup.  The first training took place on Monday July 14, 2008.  The traditional AFC Ajax Open Day was on Tuesday August 5, 2008, followed by a testimonial match for the retired former Ajax defender Jaap Stam.
citations: Jaap Stam 2008–09 AFC Ajax season