Given the question: Information: - Castledillon is a townland and former parish on the River Liffey near Straffan situated on the banks of the River Liffey 25 km upstream from the Irish capital Dublin . - The River Poddle is a river in County Dublin in Ireland. The city of Dublin is named after a "dark pool" ("dubh linn", in Irish) that was once on its course. It rises in the Cookstown area, north of Tallaght, and flows into the River Liffey in the centre of Dublin. - Straffan (variously "Teach Srafain", "Strafain" or "An Cluanini" in Irish) is a village in County Kildare, Ireland, situated on the banks of the River Liffey, 25km upstream of the Irish capital Dublin. - County Kildare is a county in Ireland. It is located in the province of Leinster and is part of the Mid-East Region. It is named after the town of Kildare. Kildare County Council is the local authority for the county which has a population of 222,130. - The Greater Dublin Area (GDA) (Irish: "Morcheantar Bhaile Atha Cliath"), or simply Greater Dublin is the city of Dublin and its hinterland, with varying definitions as to its extent. The National Transport Authority has defined the Greater Dublin Area as including the counties of Dublin (Dublin City, South Dublin, Dun LaoghaireRathdown and Fingal), Meath, Kildare, and Wicklow. However, this area does not comprise a formal political unit. The term can also apply more narrowly to the Dublin urban area and nearby suburban towns. The general area is sometimes referred to colloquially as The Pale. - The River Liffey (Irish: "An Life") is a river in Ireland, which flows through the centre of Dublin. Its major tributaries include the River Dodder, the River Poddle and the River Camac. The river supplies much of Dublin's water and a range of recreational opportunities. - Dublin is the capital and largest city of Ireland. Dublin is in the province of Leinster on Ireland's east coast, at the mouth of the River Liffey. The city has an urban area population of 1,345,402. The population of the Greater Dublin Area, , was 1,904,806 people. - The River Camac (sometimes spelled "Cammock", or, historically, "Cammoge" or "Cammoke"; Irish: "An Chamog" or "Abhainn na Camoige") is one of the larger rivers in Dublin and was one of four tributaries of the Liffey critical to the early development of the city. - The River Dodder is one of the three main rivers in Dublin, Ireland, the others being the Liffey, of which the Dodder is the largest tributary, and the Tolka. - Leinster ( ) is one of the Provinces of Ireland situated in the east of Ireland. It comprises the ancient Kingdoms of Mide, Osraige and Leinster. Following the 12th-century Norman invasion of Ireland, the historic fifths of Leinster and Mide gradually merged, mainly due to the impact of the Pale, which straddled both, thereby forming the present-day province of Leinster. The ancient kingdoms were shired into a number of counties for administrative and judicial purposes. In later centuries, local government legislation has seen further sub-division of the historic counties. What entity does 'castledillon' has the relation 'located in the administrative territorial entity' with?
The answer is:
county kildare