user: Question: The University of Colorado hosted what region?
Columns: ['Region', 'Host', 'Venue', 'City', 'State']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['East', 'University of Virginia', 'University Hall (University of Virginia)', 'Charlottesville', 'Virginia']
SQL:

assistant: SELECT "Region" FROM "Table" WHERE "Host" = 'University of Colorado';