Table:
0
A
B
C
D
E
F
1
Club
Location
Manager
Stadium
Capacity
Team captain
2
Beroe
Stara Zagora
Ilian Iliev Category:Articles with hCards
Beroe
17800
Slavi Zhekov
3
Botev
Plovdiv
Enrico Piccioni Category:Articles with hCards
Hristo Botev (Plovdiv)
21000
Vasil Vasilev
4
Cherno More
Varna
Velizar Popov Category:Articles with hCards
Ticha
12500
Georgi Iliev
5
Chernomorets
Burgas
Krassimir Balakov Category:Articles with hCards
Lazur
18037
Cvetomir Conkov
6
CSKA
Sofia
Pavel Dochev Category:Articles with hCards
Bulgarian Army
22015
Todor Yanchev
7
Levski
Sofia
Georgi Ivanov Category:Articles with hCards
Georgi Asparuhov
29200
Georgi Petkov
8
Litex
Lovech
Angel Chervenkov Category:Articles with hCards
Gradski Stadion
7050
Ivelin Popov
9
Lokomotiv Mezdra
Mezdra
Voyn Voynov Category:Articles with hCards
Lokomotiv (Mezdra)
5000
Strati Iliev
10
Lokomotiv Plovdiv
Plovdiv
Hristo Bonev Category:Articles with hCards
Lokomotiv (Plovdiv)
13800
Georgi Mechedzhiev
11
Lokomotiv Sofia
Sofia
Dimitar Vasev Category:Articles with hCards
Lokomotiv (Sofia)
22000
Georgi Markov
12
Minyor
Pernik
Anton Velkov Category:Articles with hCards
Minyor
12000
Ivaylo Ivanov
13
Montana
Montana
Atanas Dzhambazki Category:Articles with hCards
Ogosta
8000
Ventsislav Ivanov
14
Sliven 2000
Sliven
Dragoljub Simonović Category:Articles with hCards
Hadzhi Dimitar
15000
Miroslav Mindev
15
Pirin
Blagoevgrad
Stefan Grozdanov Category:Articles with hCards
Hristo Botev (Blagoevgrad)
11000
Georgi Georgiev
16
Slavia
Sofia
Velislav Vutsov Category:Articles with hCards
Ovcha Kupel
18000
Yordan Petkov

Questions and formulas:
Question: Who's captain of the team whose stadium has a capacity of 17800 people?
Formula: LET(query1,SUMMARIZE(F1,SUMX(E1)),FILTER(query1,CHOOSECOLS(query1,2)=17800))
Formula2: LET(query1,SUMMARIZE(F2:F16,SUMX(E2:E16)),FILTER(query1,CHOOSECOLS(query1,2)=17800))
Level: hard
Question: How many different team captains does the club Sliven 2000 have?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="Sliven 2000"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F16,A2:A16="Sliven 2000"),6))
Level: medium
Question: Who's the captain of the team whose stadium is Gradski Stadion?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1="Gradski Stadion"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F16,D2:D16="Gradski Stadion"),6))
Level: medium
Question: What stadium has capacity for 13800?
Formula: LET(query1,SUMMARIZE(D1,SUMX(E1)),FILTER(query1,CHOOSECOLS(query1,2)=13800))
Formula2: LET(query1,SUMMARIZE(D2:D16,SUMX(E2:E16)),FILTER(query1,CHOOSECOLS(query1,2)=13800))
Level: hard
Question: How many people can attend games in the stadium of the team whose captain is Vasil Vasilev?
Formula: SUMIFS(E1,F1,"Vasil Vasilev")
Formula2: SUMIFS(E2:E16,F2:F16,"Vasil Vasilev")
Level: easy