Table:
0
A
B
C
D
E
1
Paul McCartney
Stuart
McIntosh
Whitten
Linda McCartney
2
Bass
Electric Guitar
Electric Guitar
Drums
Tambourine
3
Bass
Electric Guitar
Electric Guitar
Drums
Keyboards
4
Bass
Acoustic Guitar
Electric Guitar
Drums
Keyboards
5
Piano
Bass
Electric Guitar
Drums
Keyboards or Drum
6
Piano
Bass
Electric Guitar
Drums
Keyboards
7
Electric Guitar
Bass
Electric Guitar
Drums
Keyboards
8
Acoustic Guitar
Bass
Electric Guitar
Drums
Keyboards
9
Acoustic Guitar
None
None
None
None
10
Piano
Bass
Electric Guitar
Drums
Tambourine/Keyboards
11
None
Bass
Electric Guitar
Drums
Keyboards
12
Keyboards/Electric Guitar
Bass/Electric Guitar
Electric Guitar
Drums
Keyboards

Questions and formulas:
Question: Which Linda McCartney has a Stuart of electric guitar?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="electric guitar"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E12,B2:B12="electric guitar"),5))
Level: medium
Question: Which Whitten has a Stuart of bass, and a Paul McCartney of electric guitar?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(B1="bass")*(A1="electric guitar")),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E12,(B2:B12="bass")*(A2:A12="electric guitar")),4))
Level: medium
Question: Which McIntosh has a Whitten of drums, and a Stuart of bass, and a Paul McCartney of electric guitar?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(D1="drums")*(B1="bass")*(A1="electric guitar")),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E12,(D2:D12="drums")*(B2:B12="bass")*(A2:A12="electric guitar")),3))
Level: medium
Question: Which Paul McCartney has a Linda McCartney of keyboards?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="keyboards"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E12,E2:E12="keyboards"),1))
Level: medium
Question: Which McIntosh has a Stuart of bass, and a Linda McCartney of keyboards or drum?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(B1="bass")*(E1="keyboards or drum")),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E12,(B2:B12="bass")*(E2:E12="keyboards or drum")),3))
Level: medium
Question: Which Paul McCartney has a Linda McCartney of keyboards or drum?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="keyboards or drum"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E12,E2:E12="keyboards or drum"),1))
Level: medium