Table:
0
A
B
C
D
E
1
Team
Coach
Home Ground
Location
Founded
2
Adelaide Cobras
Kris Trajanovski
Weigall Oval
Plympton
1972
3
Adelaide Comets
Barney Smith
Santos Stadium
Mile End
1994
4
Adelaide Hills Hawks
Doug Paterson
Hawks Nest
Woodside
1991
5
Adelaide Olympic
Unknown
Thebarton Oval
Thebarton
1978
6
Cumberland United
Nick Pantsaras
A.A. Bailey Reserve
Clarence Gardens
1943
7
Enfield City Falcons
Unknown
Rushworth Reserve
Enfield
1946
8
Noarlunga United Bulldogs
Unknown
Wilfred Taylor Reserve
Noarlunga
1963
9
Playford City Patriots
Unknown
Ramsay Park
Elizabeth
1956
10
Port Adelaide Pirates
Derek Hall
John Hart Reserve
Port Adelaide
1903
11
White City Woodville
Adrian Santrac
Frank Mitchell Park
Woodville West
1949

Questions and formulas:
Question: What is the average year that the club located in enfield was founded with an unknown coach?
Formula: AVERAGE(FILTER(E1, (B1="unknown")*(D1="enfield")))
Formula2: AVERAGE(FILTER(E2:E11, (B2:B11="unknown")*(D2:D11="enfield")))
Level: easy
Question: What was the location of the club where the home ground is wilfred taylor reserve?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="wilfred taylor reserve"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E11,C2:C11="wilfred taylor reserve"),4))
Level: medium
Question: Where is the club that was founded in 1946 located that has an unknown coach?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(B1="unknown")*(E1=1946)),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E11,(B2:B11="unknown")*(E2:E11=1946)),4))
Level: medium
Question: Where is the home ground for the club coached by nick pantsaras and founded before 1946?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(E1<1946)*(B1="nick pantsaras")),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E11,(E2:E11<1946)*(B2:B11="nick pantsaras")),3))
Level: medium