Table:
0
A
B
C
D
E
1
Winner
Country
Winter Olympics
FIS Nordic World Ski Championships
Holmenkollen
2
Ljubov Kozyreva
Soviet Union
1956
1954, 1956
1955
3
Klavdija Bojarskikh
Soviet Union
1964
1964, 1966
1965, 1966
4
Toini Gustafsson
Sweden
1968
1968
1960, 1967, 1968
5
Galina Kulakova
Soviet Union
1972
1972, 1974
1970, 1979
6
Raisa Smetanina
Soviet Union
1976
1976
1975

Questions and formulas:
Question: what is the country for the 1972 winter olympics?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1=1972),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,C2:C6=1972),2))
Level: medium
Question: what is the winter olympics year when the fis nordic world ski championships is 1976?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1=1976),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,D2:D6=1976),3))
Level: medium
Question: what is the earliest winter olympics when the fis nordic world ski championships is 1976?
Formula: MIN(FILTER(C1, D1=1976))
Formula2: MIN(FILTER(C2:C6, D2:D6=1976))
Level: easy
Question: what is the winter olympics when the country is soviet union and holmenkollen is 1970, 1979?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(B1="soviet union")*(E1="1970, 1979")),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,(B2:B6="soviet union")*(E2:E6="1970, 1979")),3))
Level: medium