Table:
0
A
B
C
D
E
1
Rank
City
Population
Year of Census or Estimate
Country
2
1
Mexico City
8,851,080
2010
Mexico
3
2
New York City
8,175,133
2010
USA
4
3
Los Angeles
3,792,621
2010
USA
5
4
Toronto
2,791,140
2011
Canada
6
5
Chicago
2,695,598
2010
USA
7
6
Houston
2,099,451
2010
USA
8
7
Montreal
1,854,442
2010
Canada
9
8
Ecatepec
1,655,015
2010
Mexico
10
9
Guadalajara
1,564,514
2010
Mexico
11
10
Philadelphia
1,556,396
2010
USA

Questions and formulas:
Question: In what Year of Census or Estimate is the Toronto Population larger than 1,556,396?
Formula: LET(query1,LET(query1,FILTER(A1:E1,B1="toronto"),SUMMARIZE(CHOOSECOLS(query1,4),SUMX(CHOOSECOLS(query1,3)))),FILTER(query1,CHOOSECOLS(query1,2)>1556396))
Formula2: LET(query1,LET(query1,FILTER(A2:E11,B2:B11="toronto"),SUMMARIZE(CHOOSECOLS(query1,4),SUMX(CHOOSECOLS(query1,3)))),FILTER(query1,CHOOSECOLS(query1,2)>1556396))
Level: hard