Table:
0
A
B
C
D
E
1
City
Country
IATA
ICAO
Airport
2
Antananarivo
Madagascar
TNR
FMMI
Ivato Airport
3
Bangkok
Thailand
BKK
VTBS
Suvarnabhumi Airport
4
Chennai
India
MAA
VOMM
Chennai International Airport
5
Dzaoudzi
Mayotte
DZA
FMCZ
Dzaoudzi Pamandzi International Airport
6
Johannesburg
South Africa
JNB
FAOR
OR Tambo Airport
7
Mahé
Seychelles
SEZ
FSIA
Seychelles International Airport
8
Moroni
Comoros
HAH
FMCH
Prince Said Ibrahim International Airport
9
Nosy Be
Madagascar
NOS
FMNN
Fascene Airport
10
Noumea
New Caledonia
NOU
NWWW
La Tontouta International Airport
11
Paris
France
CDG
LFPG
Paris-Charles de Gaulle Airport
12
Port Louis
Mauritius
MRU
FIMP
Sir Seewoosagur Ramgoolam International Airport
13
Saint Denis
Réunion
RUN
FMEE
Roland Garros Airport
14
Saint-Pierre
Réunion
ZSE
FMEP
Pierrefonds Airport
15
Sydney
Australia
SYD
YSSY
Sydney Airport
16
Toamasina
Madagascar
TMM
FMMT
Toamasina Airport

Questions and formulas:
Question: what city is the toamasina airport in?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="toamasina airport"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E16,E2:E16="toamasina airport"),1))
Level: medium
Question: What country has the city, Sydney?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,A1="sydney"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E16,A2:A16="sydney"),2))
Level: medium
Question: What city is in the country of Mayotte?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="mayotte"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E16,B2:B16="mayotte"),1))
Level: medium
Question: What is the IATA for the chennai international airport?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="chennai international airport"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E16,E2:E16="chennai international airport"),3))
Level: medium
Question: What is the airport name that has nos listed as the IATA?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="nos"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E16,C2:C16="nos"),5))
Level: medium