List all islands that are greater than the island on which Warwickshire is located.
Warwickshire is a province
SELECT DISTINCT Name FROM island WHERE Area > ( SELECT DISTINCT T3.Area FROM city AS T1 INNER JOIN locatedOn AS T2 ON T1.Name = T2.City INNER JOIN island AS T3 ON T3.Name = T2.Island WHERE T1.Province = 'Warwickshire' )