Focaccia Versiliese

• 15 1/2 baking (pan)
• 4 sage leaves
• 1/2 risen
• 250 gr unbleached all-purpose flour
• 240 ml warm water
• 130 gr corn flour
• 55 gr olives
• 18 gr garlic
• 16 ml olive oil
• 12 gr yeast (dried)