メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.59677964562 42.6303103604206, 141.597127426539 42.630506048619, 141.597899106854 42.6309416048768, 141.597373632964 42.6314229448473, 141.596805747739 42.631906008949, 141.595743868903 42.6312877411049, 141.595723749818 42.6312762319059, 141.594817984034 42.6307592871896, 141.594855746071 42.630723350043, 141.595324339156 42.6302131425898, 141.595793035164 42.629733177299, 141.596362629318 42.6300463314199, 141.59677964562 42.6303103604206)) ^^http://www.opengis.net/ont/geosparql#wktLiteral