CREATE TABLE "master_world_records" (
  "pool" text,
  "age_group" text,
  "time" text,
  "event" text,
  "date" text
);

Question: What event had a time of 6:37.73?
SQL: SELECT "event" FROM "master_world_records" WHERE "time"='6:37.73';

Question: What is the time for the 50m breaststroke?
SQL: SELECT "time" FROM "master_world_records" WHERE "event"='50m breaststroke';

Question: What age group has a time of 6:37.73 at the 200m breaststroke?
SQL: SELECT "age_group" FROM "master_world_records" WHERE "event"='200m breaststroke' AND "time"='6:37.73';

Question: What date did the 90-94 year old have a tie of 1:25.91 at the LC pool?
SQL: SELECT "date" FROM "master_world_records" WHERE "age_group"='90-94' AND "pool"='lc' AND "time"='1:25.91';