user: Question: Who was the artist before 2010 with a Promotional 7" as a format?
Columns: ['Year', 'Artist', 'Title', 'Format', 'Type']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [2002.0, 'Misfits / Balzac', '" Day the Earth Caught Fire "', 'CD', 'single']
SQL:

assistant: SELECT "Artist" FROM "Table" WHERE "Year" < 2010.0 AND "Format" = 'Promotional 7"';