Table:
0
A
B
C
D
E
F
G
1
Year
Kansas
Nebraska
North Dakota
Oklahoma
South Dakota
Texas
2
Year
Kansas
Nebraska
North Dakota
Oklahoma
South Dakota
Texas
3
1952
Eisenhower
Eisenhower
Eisenhower
Eisenhower
Eisenhower
Eisenhower
4
1956
Eisenhower
Eisenhower
Eisenhower
Eisenhower
Eisenhower
Eisenhower
5
1960
Nixon
Nixon
Nixon
Nixon
Nixon
Kennedy
6
1964
Johnson
Johnson
Johnson
Johnson
Johnson
Johnson
7
1968
Nixon
Nixon
Nixon
Nixon
Nixon
Humphrey
8
1972
Nixon
Nixon
Nixon
Nixon
Nixon
Nixon
9
1976
Ford
Ford
Ford
Ford
Ford
Carter
10
1980
Reagan
Reagan
Reagan
Reagan
Reagan
Reagan
11
1984
Reagan
Reagan
Reagan
Reagan
Reagan
Reagan
12
1988
Bush
Bush
Bush
Bush
Bush
Bush
13
1992
Bush
Bush
Bush
Bush
Bush
Bush
14
1996
Dole
Dole
Dole
Dole
Dole
Dole
15
2000
Bush
Bush
Bush
Bush
Bush
Bush
16
2004
Bush
Bush
Bush
Bush
Bush
Bush
17
2008
McCain
McCain
McCain
McCain
McCain
McCain
18
2012
Romney
Romney
Romney
Romney
Romney
Romney

Questions and formulas:
Question: What Texas has Johnson from Nort Dakota?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,D1="johnson"),7))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G18,D2:D18="johnson"),7))
Level: medium
Question: What is the oklahoma has Bush from Nebraska in year 2004?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,(C1="bush")*(A1=2004)),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G18,(C2:C18="bush")*(A2:A18=2004)),5))
Level: medium
Question: Which Nebraska has 2004 year?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,A1=2004),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G18,A2:A18=2004),3))
Level: medium
Question: What  South Dakota has Bush of Oklahoma?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,E1="bush"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G18,E2:E18="bush"),6))
Level: medium