user: Question: Who were the pregame hosts when the sideline reporters were Steve Armitage and Brenda Irving?
Columns: ['Year', 'Network', 'Play-by-play', 'Colour commentator(s)', 'Sideline reporters', 'Pregame host', 'Pregame analysts']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [2009.0, 'TSN', 'Chris Cuthbert', 'Glen Suitor', 'Sara Orlesky and Farhan Lalji', 'Dave Randorf and Brian Williams', 'Jock Climie , Matt Dunigan and Chris Schultz']
SQL:

assistant: SELECT "Pregame host" FROM "Table" WHERE "Sideline reporters" = 'Steve Armitage and Brenda Irving';