メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.798669871403 34.768546322693, 135.796308249553 34.7686158030564, 135.796268754766 34.7680122886856, 135.796255979068 34.7676516631997, 135.796590578915 34.767610808049, 135.79683032937 34.7675897960984, 135.797397773838 34.7676034144421, 135.79779256759 34.767596178591, 135.798255318837 34.7676687811885, 135.798625410133 34.7676684039106, 135.79864484086 34.7680162214309, 135.798669871403 34.768546322693)) ^^http://www.opengis.net/ont/geosparql#wktLiteral