user: Question: When did the United Kingdom format a stereo LP?
Columns: ['Region', 'Date', 'Label', 'Format', 'Catalog']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['United Kingdom', '26 October 1973', 'Chrysalis Records', 'stereo LP', 'CHR 1047']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Region" = 'United Kingdom' AND "Format" = 'stereo LP';