CREATE TABLE table_23214833_1 (capacity VARCHAR2, team_captain VARCHAR2)

How many people can attend games in the stadium of the team whose captain is Vasil Vasilev?
SELECT capacity FROM table_23214833_1 WHERE team_captain = "Vasil Vasilev"
SELECT "capacity" FROM "table_23214833_1" WHERE "Vasil Vasilev" = "team_captain"