Table:
0
A
B
C
D
E
1
Number & Name
Description
Livery
Owner(s)
Date
2
No. 18033
Gresley CK
N/A.
Railway Vehicle Preservations .
1924
3
No. 62565
Gresley BTK
Varnished teak.
Railway Vehicle Preservations .
1927
4
No. 1222
Gresley RF
N/A.
Railway Vehicle Preservations . Private owner.
1929
5
No. E70268E
Gresley POT
Deep maroon.
Railway Vehicle Preservations .
1931
6
No. 4149
Gresley BGP
Maroon.
Railway Vehicle Preservations .
1936
7
No. 23981
Gresley TTO
N/A.
Railway Vehicle Preservations .
1936
8
No. 24080
Gresley RB
N/A.
Railway Vehicle Preservations . Private owner.
1936
9
No. E1719E
Gresley OBS
BR Lined Maroon .
Railway Vehicle Preservations . Private owner.
1937
10
No. E1729E
Gresley OBS
N/A.
Railway Vehicle Preservations . Private owner.
1937
11
No. 24278
Gresley RB
Varnished teak.
Railway Vehicle Preservations .
1937
12
No. E9124E
Gresley RB
BR Blood & Custard .
Great Central Railway Plc .
1937
13
No. E70294E
Gresley POS
Deep maroon.
Railway Vehicle Preservations .
1937
14
No. 57451
Gresley BTK
Varnished teak.
Railway Vehicle Preservations .
1940
15
No. 4050
Gresley BGP
Varnished teak.
Railway Vehicle Preservations .
1940
16
No. E70654E
BR-built Thompson BZ
Lined maroon.
Railway Vehicle Preservations .
1950
17
No. E96202E
BR-built Gresley CCT
Maroon.
Railway Vehicle Preservations . Private owner.
1959

Questions and formulas:
Question: What livery was worn on the date before 1936, with the description of Gresley RF?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(E1<1936)*(B1="gresley rf")),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E17,(E2:E17<1936)*(B2:B17="gresley rf")),3))
Level: medium
Question: Which number and name has the description Gresley RB and a date before 1937?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(B1="gresley rb")*(E1<1937)),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E17,(B2:B17="gresley rb")*(E2:E17<1937)),1))
Level: medium
Question: Who is the owner before 1940, who had a number and name of no. 1222?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(E1<1940)*(A1="no. 1222")),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E17,(E2:E17<1940)*(A2:A17="no. 1222")),4))
Level: medium