CREATE TABLE "competitive" (
  "date" text,
  "tournament" text,
  "round" text,
  "ground" text,
  "opponent" text,
  "score_1" text
);

Question: Which opponent had round 1?
SQL: SELECT "opponent" FROM "competitive" WHERE "round"='1';

Question: Which date's opponent was Dender when the tournament was in the Jupiler League and the ground was a?
SQL: SELECT "date" FROM "competitive" WHERE "opponent"='dender' AND "tournament"='jupiler league' AND "ground"='a';

Question: Which ground's round was 33?
SQL: SELECT "ground" FROM "competitive" WHERE "round"='33';