Table:
0
A
B
C
D
E
1
Race
Length
Class
Circuit
Date
2
Rolex 24 at Daytona
24 Hours
All
Daytona International Speedway
February 5 February 6
3
Contac 12 Hours of Sebring
12 Hours
All
Sebring International Raceway
March 19
4
Grand Prix of Atlanta
1 Hour
GT
Road Atlanta
April 17
5
Grand Prix of Atlanta
2 Hours
WSC
Road Atlanta
April 17
6
The New England Dodge Dealers Grand Prix
1 Hour
GT
Lime Rock Park
May 30
7
The New England Dodge Dealers Grand Prix
2 Hours
WSC
Lime Rock Park
May 30
8
The Glen Continental
3 Hours
All
Watkins Glen International
June 26
9
Indy Grand Prix
1 Hour
GT
Indianapolis Raceway Park
July 10
10
Indy Grand Prix
2 Hours
WSC
Indianapolis Raceway Park
July 10
11
Monterey Sports Car Grand Prix
1 Hour
GT
Laguna Seca Raceway
July 24
12
Monterey Sports Car Grand Prix
2 Hours
WSC
Laguna Seca Raceway
July 24
13
Grand Prix of Portland
1 Hour
GT
Portland International Raceway
August 7
14
Grand Prix of Portland
2 Hours
WSC
Portland International Raceway
August 7
15
Exxon World Sports Car Championships
1 Hour
GT
Phoenix International Raceway
October 1
16
Exxon World Sports Car Championships
2 Hours
WSC
Phoenix International Raceway
October 1

Questions and formulas:
Question: Which circuit is on July 24?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="july 24"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E16,E2:E16="july 24"),4))
Level: medium
Question: On which date was the GT class at Monterey Sports Car Grand Prix?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(C1="gt")*(A1="monterey sports car grand prix")),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E16,(C2:C16="gt")*(A2:A16="monterey sports car grand prix")),5))
Level: medium
Question: What was the length for GT class at Portland International Raceway?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(C1="gt")*(D1="portland international raceway")),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E16,(C2:C16="gt")*(D2:D16="portland international raceway")),2))
Level: medium
Question: On what date did Contac 12 Hours of Sebring take place?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,A1="contac 12 hours of sebring"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E16,A2:A16="contac 12 hours of sebring"),5))
Level: medium