Table:
0
A
B
C
D
E
1
Date
Tournament
Surface
Opponent in the final
Score
2
20 May 1990
Bournemouth
Clay
Anna Benzon
7–6, 6–1
3
17 May 1992
Bournemouth
Hard
Amy Van Buuren
6–2, 6–2
4
14 June 1992
Modena
Clay
Alexandra Fusai
6–4, 6–3
5
5 July 1992
Vaihingen
Clay
Lubomira Bacheva
6–1, 6–0
6
5 March 1995
San Juan
Hard
Kyoko Nagatsuka
7–6 5 , 6–3
7
20 July 1997
Prague
Clay
Marion Maruska
6–1, 6–1

Questions and formulas:
Question: Which tournament had Lubomira Bacheva as the opponent in the final?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="lubomira bacheva"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,D2:D7="lubomira bacheva"),2))
Level: medium
Question: Who was the opponent in the final on 5 July 1992?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,A1="5 july 1992"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,A2:A7="5 july 1992"),4))
Level: medium
Question: What is the date of the tournament where Kyoko Nagatsuka was the opponent in the final?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="kyoko nagatsuka"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,D2:D7="kyoko nagatsuka"),1))
Level: medium
Question: What is the surface at the tournament of Vaihingen?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="vaihingen"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,B2:B7="vaihingen"),3))
Level: medium
Question: What was the surface of the tournament where Anna Benzon was the opponent in the final?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="anna benzon"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,D2:D7="anna benzon"),3))
Level: medium