CREATE TABLE "winners" (
  "season" text,
  "player" text,
  "position" text,
  "nationality" text,
  "team" text
);

Question: What positions are in the Chicago bulls?
SQL: SELECT "position" FROM "winners" WHERE "team"='chicago bulls';

Question: What season did a United States center play in?
SQL: SELECT "season" FROM "winners" WHERE "nationality"='united states' AND "position"='center';