Table:
0
A
B
C
D
E
1
Number
Builder
Type
Date
Works number
2
51
Baldwin Locomotive Works
DS4-4-750
1949
74408
3
52
Baldwin Locomotive Works
DS4-4-750
1949
74409
4
53
Baldwin Locomotive Works
DS4-4-1000
1949
74193
5
54
Baldwin Locomotive Works
S-12
1952/1953
75823
6
55
Baldwin Locomotive Works
RS-12
1955
76024
7
56
Baldwin Locomotive Works
RS-12
1955
76105
8
57
Baldwin Locomotive Works
S-12
1953
75914
9
61
American Locomotive Works
RS-11
1979
Unknown
10
62
American Locomotive Works
RS-11
1979
Unknown
11
63
American Locomotive Works
RS-11
1979
Unknown
12
64
Electro-Motive Diesel
GP9m
1987
Unknown
13
65
Electro-Motive Diesel
GP9m
1987
Unknown
14
66
Electro-Motive Diesel
GP9m
1956
Unknown
15
67
Electro-Motive Diesel
GP9m
6/1954
19554
16
M-80
Mack
Railbus
1923
Unknown
17
M-100
Edwards Rail Car Company
Motor Car
1925
Unknown
18
M-200
SS&IW
Motor Car
1927
Unknown
19
M-300
American Car and Foundry Company
Motor Car
1935
Unknown

Questions and formulas:
Question: What is Type, when Works Number is 75823?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1=75823),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E19,E2:E19=75823),3))
Level: medium
Question: What is Date, when Type is DS4-4-750, and when Works Number is 74409?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(C1="ds4-4-750")*(E1=74409)),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E19,(C2:C19="ds4-4-750")*(E2:E19=74409)),4))
Level: medium
Question: What is Works Number, when Type is RS-11, and when Number is 61?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(C1="rs-11")*(A1=61)),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E19,(C2:C19="rs-11")*(A2:A19=61)),5))
Level: medium
Question: What is Builder, when Date is 1925?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1=1925),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E19,D2:D19=1925),2))
Level: medium
Question: What is Works Number, when Number is 55?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,A1=55),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E19,A2:A19=55),5))
Level: medium
Question: What is Builder, when Date is 1953?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1=1953),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E19,D2:D19=1953),2))
Level: medium