Table:
0
A
B
C
D
E
1
Player
Nationality
Position
Years in Toronto
School/Club Team
2
Patrick O'Bryant
United States
Center
2009-10
Bradley
3
Jermaine O'Neal
United States
Forward-Center
2008-09
Eau Claire High School
4
Dan O'Sullivan
United States
Center
1995-96
Fordham
5
Charles Oakley
United States
Forward
1998-2001
Virginia Union
6
Hakeem Olajuwon
Nigeria / United States
Center
2001-02
Houston
7
Jimmy Oliver
United States
Guard-Forward
1996-97
Purdue

Questions and formulas:
Question: What year(s) did Hakeem Olajuwon play Center for Toronto?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,A1="hakeem olajuwon"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,A2:A7="hakeem olajuwon"),4))
Level: medium
Question: What position did Jimmy Oliver of the United States play?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(B1="united states")*(A1="jimmy oliver")),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,(B2:B7="united states")*(A2:A7="jimmy oliver")),3))
Level: medium