user: Question: What is the greatest area when the Poor Law Union is Skibbereen and the Civil Parish is Tullagh?
Columns: ['Townland', 'Area( acres )', 'Barony', 'Civil parish', 'Poor law union']
Types: ['text', 'real', 'text', 'text', 'text']
Sample row: ['Abbeystrowry', 428.0, 'West Carbery (E.D.)', 'Abbeystrowry', 'Skibbereen']
SQL:

assistant: SELECT MAX("Area( acres )") FROM "Table" WHERE "Poor law union" = 'Skibbereen' AND "Civil parish" = 'Tullagh';