user: Question: What's the resolution of the model with a PPD of 69?
Columns: ['Model', 'PPI (pixels per inch )', 'ppcm (pixels per cm )', 'Resolution', 'Typical viewing distance (in/cm)', 'Pixels per degree (PPD)']
Types: ['text', 'real', 'real', 'text', 'text', 'real']
Sample row: ['iPhone 4 / 4S and iPod Touch (4th generation)', 326.0, 128.0, '960×640', 'inches (cm)', 57.0]
SQL:

assistant: SELECT "Resolution" FROM "Table" WHERE "Pixels per degree (PPD)" = 69.0;