Table:
0
A
B
C
D
E
F
G
H
I
1
Result
Date
Race
Venue
Group
Distance
Weight (kg)
Jockey
Winner/2nd
2
2nd
18 August 2001
Manikato Stakes
Moonee Valley
G1
1200 m
55
G. Childs
1st - Piavonic
3
Won
1 September 2001
Memsie Stakes
Caulfield
G2
1400 m
55.5
G. Childs
2nd - Piavonic
4
2nd
15 September 2001
J F Feehan Stakes
Moonee Valley
G2
1600 m
55.5
G. Childs
1st - Northerly
5
Won
6 October 2001
Turnbull Stakes
Flemington
G2
2000 m
56.5
G. Childs
2nd - Universal Prince
6
2nd
27 October 2001
Cox Plate
Moonee Valley
G1
2040 m
55.5
G. Childs
1st - Northerly
7
Won
9 February 2002
Waikato Sprint
Te Rapa
G1
1400 m
56
G. Childs
2nd - Honor Bound
8
Won
9 March 2002
Coolmore Classic
Rosehill
G1
1500 m
60
G. Childs
2nd - Gentle Genius
9
Won
30 March 2002
Doncaster
Randwick
G1
1600 m
58
G. Childs
2nd - Shogun Lodge

Questions and formulas:
Question: What date was the Doncaster race? 
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:I1,C1="Doncaster"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:I9,C2:C9="Doncaster"),2))
Level: medium