メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((130.284843317129 33.2484673887636, 130.284736170104 33.2484467458403, 130.284579721255 33.2479939681811, 130.284777077501 33.2480251331657, 130.284905559344 33.2480408783351, 130.285161838482 33.2480430786101, 130.285153931484 33.2481803146962, 130.284871072062 33.2481886879161, 130.284843317129 33.2484673887636)) ^^http://www.opengis.net/ont/geosparql#wktLiteral