Table:
0
A
B
C
D
E
1
Minister
Party
Start date
End date
Prime Minister
2
Eugène Schaus
DP
6 February 1969
15 June 1974
Pierre Werner
3
Émile Krieps
DP
15 June 1974
16 July 1979
Gaston Thorn
4
Émile Krieps
DP
16 July 1979
20 July 1984
Pierre Werner
5
Marc Fischbach
CSV
20 July 1984
14 July 1989
Jacques Santer
6
Jacques Poos
LSAP
14 July 1989
13 July 1994
Jacques Santer
7
Alex Bodry
LSAP
13 July 1994
26 January 1995
Jacques Santer
8
Alex Bodry
LSAP
26 January 1995
7 August 1999
Jean-Claude Juncker

Questions and formulas:
Question: What was the start date for the party of LSAP with a Prime Minister of Jean-Claude Juncker?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(B1="lsap")*(E1="jean-claude juncker")),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E8,(B2:B8="lsap")*(E2:E8="jean-claude juncker")),3))
Level: medium