Table:
0
A
B
C
D
E
1
Date
City
Event
Winner
Prize
2
February 16–20, 2011
Sao Paulo
LAPT Sao Paulo - Brasil
Alex Manzano
$368,703
3
March 17–20, 2011
Viña del Mar
LAPT Viña del Mar - Chile
Murilo Figueiredo
$146,000
4
April 13–17, 2011
Lima
LAPT Lima - Peru
Kemal Ferri
$207,400
5
August 3–7, 2011
Punta del Este
LAPT Punta del Este - Uruguay
Alex Komaromi
$244,720
6
October 12–16, 2011
Medellin
LAPT Medellin - Colombia
Julian Menendez
$165,992
7
February 17–20, 2012
Sao Paulo
LAPT Grand Finals Carnival Poker Festival - Brazil
Daniele Nestola
$188,721

Questions and formulas:
Question: What is Date, when City is "Punta Del Este"?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="punta del este"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,B2:B7="punta del este"),1))
Level: medium
Question: What is City, when Prize is "$146,000"?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="$146,000"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,E2:E7="$146,000"),2))
Level: medium
Question: What is Date, when Winner is "Murilo Figueiredo"?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="murilo figueiredo"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,D2:D7="murilo figueiredo"),1))
Level: medium