Question: What is the round 4 that has from less than 1990, and Double for round 3?
SQL: SELECT "Round 4" FROM "2-153689-1" WHERE "From" < 1990.0 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 "2-153689-1" WHERE "Round 2" = 'Single' AND "Round 4" = 'Double' AND "From" = 1982.0;

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 "2-153689-1" WHERE "From" < 1984.0 AND "Round 3" = 'Double' AND "Goal" < 300.0;

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 "2-153689-1" WHERE "From" < 1993.0 AND "Round 3" = 'Double' AND "Round 5" = 'Double';