Table:
0
A
B
C
D
E
1
Year
Entrant
Chassis
Engine
Points
2
1950
Indianapolis Race Cars
Maserati 8CTF
Offenhauser L4
0
3
1951
Blue Crown Spark Plug / Hopkins
Moore
Offenhauser L4
0
4
1952
Blue Crown Spark Plug / Hopkins
Lesovsky
Offenhauser L4
0
5
1953
Hopkins / Motor Racers
Lesovsky
Offenhauser L4
0
6
1954
Hopkins / Motor Racers
Lesovsky
Offenhauser L4
0

Questions and formulas:
Question: What entrant drove a car with a Moore chassis prior to 1953?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(A1<1953)*(C1="moore")),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,(A2:A6<1953)*(C2:C6="moore")),2))
Level: medium