Context: Washington University has been selected by the Commission on Presidential Debates to host more presidential and vice-presidential debates than any other institution in history. United States presidential election debates were held at the Washington University Athletic Complex in 1992, 2000, 2004, and 2016. A presidential debate was planned to occur in 1996, but owing to scheduling difficulties between the candidates, the debate was canceled. The university hosted the only 2008 vice presidential debate, between Republican Sarah Palin and Democrat Joe Biden, on October 2, 2008, also at the Washington University Athletic Complex.

Question: What years were presidential debates held at Washington University?
Answer: 1992, 2000, 2004, and 2016

Question: What building at Washington University was used to host the presidential debates?
Answer: Washington University Athletic Complex

Question: Why was the presidential debate canceled in 1996 at Washington University?  
Answer: scheduling difficulties between the candidates

Question: When was the only vice presidential debate held at Washington University?
Answer: October 2, 2008

Question: Who were the candidates in the vice presidential debate at Washington University?
Answer: Republican Sarah Palin and Democrat Joe Biden

Question: In what year was the Washington University Athletic Complex built?
Answer: Unanswerable

Question: Who was one of the presidential candidates to debate in 1992?
Answer: Unanswerable

Question: Who was one of the presidential candidates to debate in 2000?
Answer: Unanswerable

Question: Who was one of the presidential candidates in 1996?
Answer: Unanswerable

Question: Was it presidential or vice presidential debate held at Washington University in 2000?
Answer: Unanswerable