Table:
0
A
B
C
D
E
1
Name
Street address
Years as tallest
Height ft / m
Floors
2
Trinity Episcopal Cathedral
328 Sixth Avenue
1872–1888
200 / 61
N/A
3
Allegheny County Courthouse
436 Grant Street
1888–1902
249 / 76
5
4
Farmers Bank Building [A ]
301 Fifth Avenue
1902–1910
344 / 105
27
5
Oliver Building
535 Smithfield Street
1910–1912
347 / 106
25
6
First National Bank Building [B ]
511 Wood Street at Fifth Avenue
1912–1928
387 / 118
26
7
Grant Building
330 Grant Street
1928–1932
485 / 148
40
8
Gulf Building
707 Grant Street
1932–1970
582 / 177
44
9
U.S. Steel Tower
600 Grant Street
1970–present
841 / 256
64

Questions and formulas:
Question: What is the street address of the building with 5 floors?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1=5),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E9,E2:E9=5),2))
Level: medium
Question: What is the street address of the building with 40 floors?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1=40),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E9,E2:E9=40),2))
Level: medium
Question: What were the years the building with 44 floors was tallest?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1=44),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E9,E2:E9=44),3))
Level: medium
Question: What is the street address of Oliver Building?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,A1="oliver building"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E9,A2:A9="oliver building"),2))
Level: medium