メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.374041544016 43.7373758639139, 142.374432581123 43.7374921586535, 142.374912216429 43.7376347969361, 142.374460566338 43.7383924532435, 142.374454166243 43.7384047143059, 142.374035301777 43.7392084122558, 142.37354040633 43.7390593168384, 142.373325593398 43.7389949915542, 142.373159803055 43.7389453285655, 142.372709435542 43.7388104226057, 142.37316357948 43.7380005212522, 142.373569023899 43.7372774819109, 142.373590456085 43.7372417000971, 142.37389554392 43.7373324391221, 142.374041544016 43.7373758639139)) ^^http://www.opengis.net/ont/geosparql#wktLiteral