Table:
0
A
B
C
D
E
1
Year
Network
Play-by-play
Colour commentator(s)
Pregame host
2
1999
CBC
Chris Cuthbert
Chris Walby
Brian Williams
3
1998
CBC
Chris Cuthbert
Chris Walby
Brian Williams
4
1997
CBC
Chris Cuthbert
David Archer
Brian Williams
5
1996
CBC
Chris Cuthbert
James Curry and David Archer
Brian Williams
6
1995
CBC
Don Wittman
Dan Kepley
Brian Williams and Scott Oake
7
1994
CBC
Don Wittman
James Curry and Dan Kepley
Brian Williams
8
1993
CBC
Don Wittman
James Curry and Dan Kepley
Brian Williams
9
1992
CBC
Don Wittman
Joe Galat
Brian Williams
10
1991
CBC
Don Wittman
Joe Galat
Brian Williams
11
1990
CBC
Don Wittman
Ron Lancaster
Brian Williams
12
1990
CFN
Bob Irving
Neil Lumsden and Nick Bastaja
Dave Hodge

Questions and formulas:
Question: For which network was Chris Walby the color commentator after 1990?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(A1>1990)*(D1="chris walby")),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E12,(A2:A12>1990)*(D2:D12="chris walby")),2))
Level: medium
Question: Who was the pregame host before 1992 when there was a play by play of Bob Irving?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(A1<1992)*(C1="bob irving")),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E12,(A2:A12<1992)*(C2:C12="bob irving")),5))
Level: medium