Table:
0
A
B
C
D
E
F
1
Race Name
Circuit
Date
Winning driver
Constructor
Report
2
XIV Argentine Grand Prix
Buenos Aires
24 January
Chris Amon
Matra
Report
3
VI Race of Champions
Brands Hatch
21 March
Clay Regazzoni
Ferrari
Report
4
Questor Grand Prix
Ontario Motor Speedway
28 March
Mario Andretti
Ferrari
Report
5
XII Spring Trophy
Oulton Park
9 April
Pedro Rodriguez
BRM
Report
6
XXIII BRDC International Trophy
Silverstone
8 May
Graham Hill
Brabham - Cosworth
Report
7
VI Rhein-Pokalrennen
Hockenheim
13 June
Jacky Ickx
Ferrari
Report
8
XVIII International Gold Cup
Oulton Park
22 August
John Surtees
Surtees - Cosworth
Report

Questions and formulas:
Question: What circuit did Clay Regazzoni win?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1="Clay Regazzoni"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F8,D2:D8="Clay Regazzoni"),2))
Level: medium
Question: What was the date when Chris Amon won?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1="Chris Amon"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F8,D2:D8="Chris Amon"),3))
Level: medium
Question: What circuit is the Vi Rhein-Pokalrennen race in?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="VI Rhein-Pokalrennen"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F8,A2:A8="VI Rhein-Pokalrennen"),2))
Level: medium