user: Question: When was the first beatification in korea that was canonised before 1984?
Columns: ['Name', 'Martyred', 'Place', 'Beatified', 'Canonised']
Types: ['text', 'real', 'text', 'real', 'real']
Sample row: ['Laurent-Marie-Joseph Imbert / St. Imbert', 1839.0, 'Korea', 1925.0, 1984.0]
SQL:

assistant: SELECT MIN("Beatified") FROM "Table" WHERE "Place" = 'korea' AND "Canonised" < 1984.0;