Table:
0
A
B
C
D
E
1
Name
Took Office
Left Office
President
Party
2
Sisavath Keobounphanh
1996
1998
Nouhak Phoumsavanh
Lao People's Revolutionary Party
3
Oudom Khattigna
1998
1999
Khamtai Siphandon
Lao People's Revolutionary Party
4
Vacant (1999-2001)
Vacant (1999-2001)
Vacant (1999-2001)
Vacant (1999-2001)
Vacant (1999-2001)
5
Choummaly Sayasone
2001
2006
Khamtai Siphandon
Lao People's Revolutionary Party
6
Bounnhang Vorachith
2006
Incumbent
Choummaly Sayasone
Lao People's Revolutionary Party

Questions and formulas:
Question: What is Left Office, when Took Office is 2006?
Formula: FILTER(C1,B1="2006")
Formula2: FILTER(C2:C6,B2:B6="2006")
Level: easy
Question: What is Left Office, when Party is Vacant (1999-2001)?
Formula: FILTER(C1,E1="vacant (1999-2001)")
Formula2: FILTER(C2:C6,E2:E6="vacant (1999-2001)")
Level: easy
Question: What is Name, when President is Khamtai Siphandon, and when Left Office is 1999?
Formula: FILTER(A1,(D1="khamtai siphandon")*(C1="1999"))
Formula2: FILTER(A2:A6,(D2:D6="khamtai siphandon")*(C2:C6="1999"))
Level: easy
Question: What is Party, when Name is Oudom Khattigna?
Formula: FILTER(E1,A1="oudom khattigna")
Formula2: FILTER(E2:E6,A2:A6="oudom khattigna")
Level: easy
Question: What is Party, when Took Office is 1998?
Formula: FILTER(E1,B1="1998")
Formula2: FILTER(E2:E6,B2:B6="1998")
Level: easy
Question: What is Left Office, when Took Office is 1998?
Formula: FILTER(C1,B1="1998")
Formula2: FILTER(C2:C6,B2:B6="1998")
Level: easy