Table:
0
A
B
C
D
E
1
Race
Length
Class
Circuit
Date
2
Rolex 24 at Daytona
24 Hours
Both
Daytona International Speedway
February 1 February 2
3
Superflo 12 Hours of Sebring
12 Hours
Both
Sebring International Raceway
March 15
4
NAPA Grand Prix of Atlanta
2 Hours
GTS
Road Atlanta
April 19
5
NAPA Grand Prix of Atlanta
2 Hours
WSC
Road Atlanta
April 20
6
Dodge Dealers Grand Prix
1 Hour 45 Minutes
GTS
Lime Rock Park
May 26
7
Dodge Dealers Grand Prix
1 Hour 45 Minutes
WSC
Lime Rock Park
May 26
8
First Union Six Hours at the Glen
6 Hours
Both
Watkins Glen International
June 1
9
California Grand Prix
1 Hour 45 Minutes
GTS
Sears Point Raceway
July 13
10
California Grand Prix
2 Hours
WSC
Sears Point Raceway
July 13
11
Mosport Festival
1 Hour 45 Minutes
GTS
Mosport International Raceway
August 31
12
Mosport Festival
2 Hours
WSC
Mosport International Raceway
August 31
13
Sportscar Grand Prix
1 Hour 45 Minutes
GTS
Las Vegas Motor Speedway
September 20
14
Sportscar Grand Prix
2 Hours
WSC
Las Vegas Motor Speedway
September 20
15
Festival of Road Racing
2 Hours
WSC
Pikes Peak International Raceway
September 28
16
Festival of Road Racing
1 Hour 45 Minutes
GTS
Pikes Peak International Raceway
September 28
17
NAPA Sebring Octoberfest
2 Hours
WSC
Sebring International Raceway
October 18
18
NAPA Sebring Octoberfest
1 Hour 45 Minutes
GTS
Sebring International Raceway
October 18
19
VISA Sports Car Championship
1 Hour 45 Minutes
GTS
Laguna Seca Raceway
October 26
20
VISA Sports Car Championship
1 Hour 45 Minutes
WSC
Laguna Seca Raceway
October 26

Questions and formulas:
Question: On which date was the Dodge Dealers Grand Prix GTS class race?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(A1="dodge dealers grand prix")*(C1="gts")),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E20,(A2:A20="dodge dealers grand prix")*(C2:C20="gts")),5))
Level: medium
Question: Which race was on the Las Vegas Motor Speedway for 2 hours?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(D1="las vegas motor speedway")*(B1="2 hours")),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E20,(D2:D20="las vegas motor speedway")*(B2:B20="2 hours")),1))
Level: medium
Question: Which class was on the Las Vegas Motor Speedway for 2 hours?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(B1="2 hours")*(D1="las vegas motor speedway")),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E20,(B2:B20="2 hours")*(D2:D20="las vegas motor speedway")),3))
Level: medium
Question: What circuit was on June 1 with a class of both?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(C1="both")*(E1="june 1")),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E20,(C2:C20="both")*(E2:E20="june 1")),4))
Level: medium
Question: Which date was a GTS class on the Mosport International Raceway?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(C1="gts")*(D1="mosport international raceway")),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E20,(C2:C20="gts")*(D2:D20="mosport international raceway")),5))
Level: medium