CREATE TABLE table_30496 ("Name" TEXT, "Corporate name" TEXT, "Regional district" TEXT, "Incorporation date  ( city ) " TEXT, "Population  ( 2011 ) " FLOAT, "Population  ( 2006 ) " FLOAT, "Change  ( % ) " TEXT, "Area  ( km\\u00b2 ) " TEXT, "Population density" TEXT)

What is the name of the corporation with an area of 15.63 km?
SELECT "Corporate name" FROM table_30496 WHERE "Area (km\u00b2)" = '15.63'
SELECT "Corporate name" FROM "table_30496" WHERE "Area (km\u00b2)" = '15.63'