Table: laurent_marie_joseph_imbert
Columns: name
martyred
place
beatified
canonised

Question: When was the first beatification in Korea that was canonised before 1984?
SQL: SELECT MIN("beatified") FROM laurent_marie_joseph_imbert 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 laurent_marie_joseph_imbert 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 laurent_marie_joseph_imbert 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 laurent_marie_joseph_imbert WHERE "beatified" = 1909 AND "name" = 'john hoan trinh doan / st. john hoan' AND "canonised" > 1988