Table:
0
A
B
C
D
E
F
1
Player
Country
Year(s) won
Total
To par
Finish
2
Hale Irwin
United States
1974
284
E
1
3
Gary Player
South Africa
1965
286
+2
T2
4
Jerry Pate
United States
1976
286
+2
T2
5
Jack Nicklaus
United States
1962 , 1967 , 1972
291
+7
T9
6
Andy North
United States
1978
293
+9
T11
7
Lee Trevino
United States
1968 , 1971
295
+11
T19
8
Hubert Green
United States
1977
296
+12
24
9
Lou Graham
United States
1975
297
+13
T25
10
Arnold Palmer
United States
1960
305
+21
T59

Questions and formulas:
Question: What is Finish, when Country is "South Africa"?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="south africa"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F10,B2:B10="south africa"),6))
Level: medium
Question: What is Player, when Country is "United States", and when Year(s) Won is "1976"?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,(B1="united states")*(C1=1976)),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F10,(B2:B10="united states")*(C2:C10=1976)),1))
Level: medium