Question: What's the date when the score was 690.3?
SQL: SELECT "Date" FROM "2-18986934-4" WHERE "Score" = '690.3';

Question: What's the place of 1989 with a comp of ECH?
SQL: SELECT "Place" FROM "2-18986934-4" WHERE "Comp" = 'ECH' AND "Date" = '1989';

Question: Who was the shooter with a score of 686.4?
SQL: SELECT "Shooter" FROM "2-18986934-4" WHERE "Score" = '686.4';