メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.907940959201 38.9321405542001, 139.906239169675 38.9321044055979, 139.90532657153 38.9320641562552, 139.904962568375 38.9320488086426, 139.904661739198 38.9320464188181, 139.904683294849 38.931809623913, 139.904767575448 38.9304023613622, 139.904840822474 38.9292402820936, 139.907170099519 38.9293185877436, 139.907206915861 38.9289189866875, 139.908502929378 38.9291065352828, 139.908329553981 38.9300595006315, 139.907940959201 38.9321405542001)) ^^http://www.opengis.net/ont/geosparql#wktLiteral