What team was promoted in the Serbian League East in the same season when Kolubara was promoted in the Serbian League Belgrade?
CREATE TABLE table_12283621_6 (serbian_league_east VARCHAR, serbian_league_belgrade VARCHAR)
SELECT serbian_league_east FROM table_12283621_6 WHERE serbian_league_belgrade = "Kolubara"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_12283621_6 (serbian_league_east VARCHAR, serbian_league_belgrade VARCHAR) Question: What team was promoted in the Serbian League East in the same season when Kolubara was promoted in the Serbian League Belgrade? [/INST] SELECT serbian_league_east FROM table_12283621_6 WHERE serbian_league_belgrade = "Kolubara" </s>