user: Question: What is the release Date of the 7" single in Catalog 87184?
Columns: ['Date', 'Label', 'Region', 'Format', 'Catalog']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['April 1986', 'Polydor', 'France', '7" single', '883 829-7']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Format" = '7" single' AND "Catalog" = '87184';