Table:
0
A
B
C
D
E
1
Builder
Type
Built
Bought
Notes
2
Hughes Falcon Works
0-4-2ST
1874 (?)
1877
Scrapped c.1912
3
Lennox Lange
0-6-0ST
1881
1881
Scrapped c.1906
4
W.G. Bagnall
0-6-0T
1906
1906
Scrapped 1937
5
Kerr Stuart
0-4-2T "Skylark" class
1902
1923
Scrapped 1950
6
Baldwin Locomotive Works
4-6-0PT class 10-12-D
1916
1923
Scrapped 1950
7
Baldwin Locomotive Works
4-6-0PT class 10-12-D
1917
1923
Scrapped 1950

Questions and formulas:
Question: What are the notes for a Type of 0-6-0t?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="0-6-0t"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,B2:B7="0-6-0t"),5))
Level: medium
Question: What is the notes for the vehicle built in 1917?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1=1917),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,C2:C7=1917),5))
Level: medium