Question: What is the birthdate of this former American football quarterback who played for the Dallas Cowboys and who was protected by his offensive tackle Mark Tuinei?
Related documents: [0]  [DOC] Troy Kenneth Aikman (born November 21, 1966) is a former American football quarterback who played for the Dallas Cowboys in the National Football League (NFL). The number one overall draft pick in 1989, Aikman played twelve consecutive seasons as quarterback with the Cowboys. During his career he was a six-time Pro Bowl selection, led the team to three Super Bowl victories, and was the Super Bowl XXVII MVP. Aikman was elected to the Pro Football Hall of Fame in 2006 and to the College Football Hall of Fame on December 9, 2008 in New York City. [END] 
[1]  [DOC] Mark Pulemau Tuinei (March 31, 1960 – May 6, 1999) was an American football offensive tackle in the National Football League for the Dallas Cowboys. Known as a "gentle giant", his career lasted for 15 years (1983–1997) and his ability to protect quarterback Troy Aikman and to run-block for running back Emmitt Smith helped them win Super Bowls in 1992, 1993, and 1995 and the NFC East Division in 1985 and 1992-96. He was also selected for the Pro Bowl in 1994 and 1995. [END] 
Answer: 
November 21, 1966
November 21, 1966