メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.770095738074 43.2118390336559, 141.769121315586 43.212852459697, 141.768915603747 43.2127108680267, 141.76878047764 43.2126230206477, 141.768722313859 43.2125852222564, 141.767879471769 43.2112192008794, 141.768930372706 43.2106833559162, 141.769102589727 43.2108655270105, 141.76939795765 43.211215246086, 141.769923919846 43.2109001298673, 141.770095738074 43.2118390336559)) ^^http://www.opengis.net/ont/geosparql#wktLiteral