Table:
0
A
B
C
D
E
1
Season
Serbian League Belgrade
Serbian League East
Serbian League Vojvodina
Serbian League West
2
2006–07
Hajduk Beograd
Jagodina
Novi Sad
Metalac G. Milanovac
3
2007–08
Kolubara
Dinamo Vranje
Spartak Subotica Inđija
Mladi Radnik
4
2008–09
Zemun Teleoptik
Radnički Niš
Proleter Novi Sad Radnički Sombor
Sloga Kraljevo
5
2009–10
BASK
Sinđelić Niš
Big Bull Radnički
Radnički 1923
6
2010–11
OFK Mladenovac
Radnički Niš
Donji Srem
Sloga Kraljevo
7
2011–12
Voždovac
Timok
Radnički N. Pazova
Jedinstvo Užice

Questions and formulas:
Question: What team was promoted in the Serbian League East in the same season when Kolubara was promoted in the Serbian League Belgrade?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="Kolubara"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,B2:B7="Kolubara"),3))
Level: medium