CREATE TABLE "team_overview" (
  "club" text,
  "location" text,
  "manager" text,
  "stadium" text,
  "capacity" real,
  "team_captain" text
);

Question: Who's captain of the team whose stadium has a capacity of 17800 people?
SQL: SELECT "team_captain" FROM "team_overview" WHERE "capacity"=17800;

Question: How many different team captains does the club Sliven 2000 have?
SQL: SELECT COUNT("team_captain") FROM "team_overview" WHERE "club"='Sliven 2000';

Question: Who's the captain of the team whose stadium is Gradski Stadion?
SQL: SELECT "team_captain" FROM "team_overview" WHERE "stadium"='Gradski Stadion';

Question: What stadium has capacity for 13800?
SQL: SELECT "stadium" FROM "team_overview" WHERE "capacity"=13800;

Question: How many people can attend games in the stadium of the team whose captain is Vasil Vasilev?
SQL: SELECT "capacity" FROM "team_overview" WHERE "team_captain"='Vasil Vasilev';