Table:
0
A
B
C
D
E
1
Year
Location
Gold
Silver
Bronze
2
2005
Herne Hill
Kate Cullen Ian Smith
Jo Tindley Colin Denman
Joy Nixon Derek Marloe
3
2006
Reading
Victoria Pendleton Sean Bannister
Laura Bissell Ian Smith
Leda Cox Paul Spender
4
2007
Maindy
Victoria Pendleton Sean Bannister
Alex Greenfield Unknown
Katie Curtis Unknown
5
2008
Maindy
Janet Birkmyre Graham Bristow
Hannah Rich James Taylor
Joanne McRae Colin Denman
6
2009
Newport
Danni King Courtney Rowe
Emma Patterson George Gilbert
Melanie Sneddon Doug Pinkerton
7
2010
Scunthorpe
Laura Trott Sean Bannister
Danni King Courtney Rowe
Janet Birkmyre Graham Bristow
8
2011
Herne Hill
Hannah Walker Peter Bäuerlein
Claire Newland Dave Scott
Corrine Hall Derek Marloe
9
2012
Herne Hill
Hannah Walker George Gilbert
Corrine Hall Derek Marloe
Joanne McRae Sean Bannister

Questions and formulas:
Question: Who won the Silver the Year Katie Curtis Unknown won the Bronze?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="katie curtis unknown"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E9,E2:E9="katie curtis unknown"),4))
Level: medium