CREATE TABLE "scoring_format" (
  "from" real,
  "goal" real,
  "round_1" text,
  "round_2" text,
  "round_3" text,
  "round_4" text,
  "round_5" text,
  "round_6" text
);

Question: What is the round 4 that has from less than 1990, and double for round 3?
SQL: SELECT "round_4" FROM "scoring_format" WHERE "from"<1990 AND "round_3"='double';

Question: What is the round 6+ that has single as round 2, double as round 4, from 1982?
SQL: SELECT "round_6" FROM "scoring_format" WHERE "round_2"='single' AND "round_4"='double' AND "from"=1982;

Question: Which round 1 has a from prior to 1984, double as round 3, with a goal lwss than 300?
SQL: SELECT "round_1" FROM "scoring_format" WHERE "from"<1984 AND "round_3"='double' AND "goal"<300;

Question: What is the round 6+ that has a from prior to 1993, double for round 3, and a double for round 5?
SQL: SELECT "round_6" FROM "scoring_format" WHERE "from"<1993 AND "round_3"='double' AND "round_5"='double';