メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.82283045289 35.3868216776273, 136.819556902751 35.3874708182915, 136.818763970886 35.3847920189769, 136.818767021842 35.3847923098327, 136.819528111729 35.3848568059964, 136.819530668492 35.3848570945215, 136.819536277318 35.3848576738862, 136.819536772923 35.3848576049926, 136.819548225922 35.3848585534698, 136.819660312591 35.3848340852705, 136.822122837111 35.3843656754537, 136.82283045289 35.3868216776273)) ^^http://www.opengis.net/ont/geosparql#wktLiteral