メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.875432533512 43.0117584927801, 142.875243887522 43.0116460809661, 142.874278919008 43.0110654247548, 142.874146480024 43.0109857601452, 142.874466543614 43.0107138117694, 142.874923037424 43.0103106581675, 142.875038475793 43.0103820463852, 142.875463455443 43.010665618391, 142.875904984398 43.0109455117285, 142.876256639747 43.0106569296538, 142.876317438685 43.0106938017925, 142.876512370737 43.0108119455737, 142.875432533512 43.0117584927801)) ^^http://www.opengis.net/ont/geosparql#wktLiteral