メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.115297386747 43.541422544206, 142.116933975173 43.5415575220974, 142.116826650235 43.5423240018806, 142.115149183034 43.5421784266265, 142.113967357671 43.5420833751391, 142.112971479699 43.5420280531477, 142.11308823905 43.5412498404504, 142.115297386747 43.541422544206)) ^^http://www.opengis.net/ont/geosparql#wktLiteral