question: What years were presidential debates held at Washington University ?
answer: 1992 , 2000 , 2004 , and 2016
turker_answer: Presidential debates were held at Washington University in 1992 , 2000 , 2004 , and 2016 .
rule-based: Presidential debates held at Washington University were 1992 , 2000 , 2004 , and 2016 .