CREATE TABLE "saints" (
  "name" text,
  "martyred" real,
  "place" text,
  "beatified" real,
  "canonised" real
);

Question: When was the first beatification in Korea that was canonised before 1984?
SQL: SELECT MIN("beatified") FROM "saints" WHERE "place"='korea' AND "canonised"<1984;

Question: When was Laurent-Marie-Joseph Imbert / St. Imbert, who was beatified after 1909 and canonised after 1984, martyred?
SQL: SELECT MAX("martyred") FROM "saints" WHERE "beatified">1909 AND "name"='laurent-marie-joseph imbert / st. imbert' AND "canonised">1984;

Question: When was the person(s) who were canonised before 1988 beatified?
SQL: SELECT "beatified" FROM "saints" WHERE "canonised"<1988;

Question: When was John Hoan Trinh Doan / St. John Hoan, who was beatified in 1909 and canonised after 1988, martyred?
SQL: SELECT MAX("martyred") FROM "saints" WHERE "beatified"=1909 AND "name"='john hoan trinh doan / st. john hoan' AND "canonised">1988;