メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.868599029776 37.6844975775317, 139.868778725041 37.684873001417, 139.866137923119 37.6857454211759, 139.865191813404 37.6840042879338, 139.866721316228 37.6832352858938, 139.867915249939 37.6830316318195, 139.867976558117 37.6831625448817, 139.868421905877 37.684113284296, 139.868599029776 37.6844975775317)) ^^http://www.opengis.net/ont/geosparql#wktLiteral