Table:
0
A
B
C
D
E
1
Original NER class
1914 NER class
LNER Class
Cylinders
Driving wheels
2
M1
M
D17/1
(2) 19″ x 26″
7′ 1¼″
3
Q
—
D17/2
(2) 19½″ x 26″
7′ 1¼″
4
Q1
—
D18
(2) 19½″ x 26″
7′ 7¼″
5
M (new)
—
—
HP (1) 20″ x 26″ LP (1) 28″ x 26″
7′ 1¼″
6
M (1898)
3CC
D19
HP (1) 19″ x 26″ LP (2) 20″ x 26″
7′ 1¼″

Questions and formulas:
Question: What driving wheels are on the m1 original NER class?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,A1="m1"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,A2:A6="m1"),5))
Level: medium
Question: What is the LNER class with an m 1914 NER class?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="m"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,B2:B6="m"),3))
Level: medium
Question: What is the 1914 NER class with a d17/2 LNER class?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="d17/2"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,C2:C6="d17/2"),2))
Level: medium