CREATE TABLE table_30120556_1 (area__acres__ NUMBER, townland VARCHAR2)

What is the fewest area in Derrynanool townland?
SELECT MIN(area__acres__) FROM table_30120556_1 WHERE townland = "Derrynanool"
SELECT MIN("area__acres__") FROM "table_30120556_1" WHERE "Derrynanool" = "townland"