Table:
0
A
B
C
D
E
F
1
Rank
Name
Location
Height feet / metres
Floors
Year Proposed
2
1
Dravska vrata
Maribor
112 m
N/A
N/A
3
2
Emonika
Ljubljana
107 m
N/A
27
4
3
Kolizej Centre
Ljubljana
75 m
18
2010
5
4
Severna mestna vrata
Ljubljana
2 x 72 m
22
2010
6
5
Hotel Plaza, Ljubljana
Ljubljana
60 m
15
2010

Questions and formulas:
Question: What building is in ljubljana, proposed in 2010, and has 15 floors?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,(C1="ljubljana")*(F1=2010)*(E1=15)),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,(C2:C6="ljubljana")*(F2:F6=2010)*(E2:E6=15)),2))
Level: medium