メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.76264922759 42.9009398165019, 140.763119605206 42.9009170318059, 140.764018502341 42.9008735157054, 140.764129852625 42.9021381277841, 140.764182124191 42.9026708657957, 140.764251225978 42.9034029224607, 140.76419915739 42.9034038631046, 140.762870429037 42.9034685829051, 140.761967022713 42.9035069670556, 140.761902405277 42.9026810022779, 140.761855567471 42.9021021268403, 140.761801130331 42.9014849577537, 140.761765366514 42.900982602972, 140.76264922759 42.9009398165019)) ^^http://www.opengis.net/ont/geosparql#wktLiteral