メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.843017575751 35.8859535240753, 139.842305818265 35.8858408080935, 139.841424840597 35.8856936921858, 139.841469468991 35.8851271397326, 139.841487431895 35.8848630568719, 139.842094016278 35.8848931568715, 139.842348994851 35.8849004543147, 139.842595818677 35.8848801662708, 139.843050612727 35.8848480055217, 139.843046797688 35.8855902999396, 139.843017575751 35.8859535240753)) ^^http://www.opengis.net/ont/geosparql#wktLiteral