Read this: Although Chancellor Wrighton had noted after the 2004 debate that it would be "improbable" that the university will host another debate and was not eager to commit to the possibility, he subsequently changed his view and the university submitted a bid for the 2008 debates. "These one-of-a-kind events are great experiences for our students, they contribute to a national understanding of important issues, and they allow us to help bring national and international attention to the St. Louis region as one of America's great metropolitan areas," said Wrighton.

Who said it would be "probable" that their university would ask to host another debate in 2004?
What is the answer? (If it cannot be answered, return "unanswerable")
unanswerable