Table:
0
A
B
C
D
E
1
Year
Entrant
Chassis
Engine
Points
2
1986
Osella Squadra Corse
Osella FA1G
Alfa Romeo V8
0
3
1987
Osella Squadra Corse
Osella FA1I
Alfa Romeo V8
0
4
1987
Osella Squadra Corse
Osella FA1G
Alfa Romeo V8
0
5
1988
Scuderia Italia
Dallara 3087
Cosworth V8
0
6
1988
Scuderia Italia
Dallara 188
Cosworth V8
0
7
1989
Scuderia Italia
Dallara 189
Cosworth V8
4
8
1990
Footwork Arrows Racing
Arrows A11B
Cosworth V8
2
9
1991
Footwork Grand Prix International
Footwork A11C
Porsche V12
0
10
1991
Footwork Grand Prix International
Footwork FA12
Porsche V12
0
11
1991
Footwork Grand Prix International
Footwork FA12C
Cosworth V8
0
12
1992
Andrea Moda Formula
Coloni C4B
Judd V10
0
13
1992
Andrea Moda Formula
Moda S921
Judd V10
0

Questions and formulas:
Question: What is the chassis after 1991?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,A1>1991),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E13,A2:A13>1991),3))
Level: medium
Question: What are the average points after 1992?
Formula: AVERAGE(FILTER(E1, A1>1992))
Formula2: AVERAGE(FILTER(E2:E13, A2:A13>1992))
Level: easy
Question: What is the sum of points in 1991, for footwork a11c chassis?
Formula: SUM(FILTER(E1, (A1=1991)*(C1="footwork a11c")))
Formula2: SUM(FILTER(E2:E13, (A2:A13=1991)*(C2:C13="footwork a11c")))
Level: easy