user: Question: Which series episode has a netflix figure of S04E21?
Columns: ['Series Ep.', 'Episode', 'Netflix', 'Segment A', 'Segment B', 'Segment C', 'Segment D']
Types: ['text', 'real', 'text', 'text', 'text', 'text', 'text']
Sample row: ['8-01', 92.0, 'S04E14', 's Photograph', 'Fur Tanning', 'Welding Electrodes', 'Electric Violins']
SQL:

assistant: SELECT "Series Ep." FROM "Table" WHERE "Netflix" = 'S04E21';