user: Question: Who is the creator when the view happens to GDDM, AFP viewer?
Columns: ['Language', 'Creator', 'First public release date', 'Editor', 'Viewer']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Computable Document Format', 'Wolfram Research', '2010', 'Mathematica', 'CDF Player']
SQL:

assistant: SELECT "Creator" FROM "Table" WHERE "Viewer" = 'GDDM, AFP viewer';