メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.75181866061 35.4119258254297, 136.75122210955 35.4119800165496, 136.751219973984 35.411800682359, 136.751144756502 35.4113297331788, 136.751495018593 35.4112960732865, 136.751489216438 35.4112362663075, 136.751697974734 35.4112118396122, 136.751794648232 35.4117517338448, 136.75181866061 35.4119258254297)) ^^http://www.opengis.net/ont/geosparql#wktLiteral