Table:
0
A
B
C
D
E
1
Date
Tournament
Surface
Opponent in the final
Score
2
May 31, 2004
Tenerife
Hard
Jaymon Crabb
4–6, 6–4, 6–4
3
July 26, 2004
Lomé
Hard
Adam Thompson
6–0, 6–4
4
October 17, 2005
Lagos
Hard
Arnaud Segodo
6–4, 3–6, 6–3
5
July 31, 2006
Dakar
Hard
Valentin Sanon
6–1, 1–6, 6–1
6
February 26, 2007
Benin City
Hard
Valentin Sanon
6–4, 6–4
7
July 30, 2007
Dakar
Hard
Rudy Coco
6–2, 6–3
8
August 6, 2007
Yaoundé
Hard
Bogdan Leonte
6–4, 6–4

Questions and formulas:
Question: When did Adam Thompson play in the final?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="adam thompson"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E8,D2:D8="adam thompson"),1))
Level: medium
Question: When was the Lagos tournament?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="lagos"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E8,B2:B8="lagos"),1))
Level: medium