Table:
0
A
B
C
D
E
1
Rank
Mountain Peak
Region
Mountain Range
Location
2
1
Fishers Peak
Colorado
Raton Mesa
37.0982°N 104.4628°W
3
2
East Spanish Peak
Colorado
Spanish Peaks
37.3934°N 104.9201°W
4
3
West Spanish Peak
Colorado
Spanish Peaks
37.3756°N 104.9934°W
5
4
Pikes Peak
Colorado
Front Range
38.8405°N 105.0442°W
6
5
Blanca Peak
Colorado
Sangre de Cristo Mountains
37.5775°N 105.4856°W
7
6
Mount Harvard
Colorado
Sawatch Range
38.9244°N 106.3207°W
8
7
Mount Elbert
Colorado
Sawatch Range
39.1178°N 106.4454°W

Questions and formulas:
Question: What region has a 5 rank?
Formula: LET(query1,SUMMARIZE(C1,SUMX(A1)),FILTER(query1,CHOOSECOLS(query1,2)=5))
Formula2: LET(query1,SUMMARIZE(C2:C8,SUMX(A2:A8)),FILTER(query1,CHOOSECOLS(query1,2)=5))
Level: hard
Question: Which mountain peak has spanish peaks?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="spanish peaks"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E8,D2:D8="spanish peaks"),2))
Level: medium