メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.875208421234 35.2274915577897, 136.874918720956 35.2277954446644, 136.87484328601 35.227794205278, 136.874384887799 35.2277718954521, 136.874631998299 35.2273490991539, 136.874979799659 35.2267648514266, 136.875084737571 35.22656270336, 136.875320912046 35.226596305208, 136.875351451665 35.2270125213575, 136.875426308576 35.2270136175315, 136.875425880204 35.2271329871267, 136.8755397498 35.227138473914, 136.875208421234 35.2274915577897)) ^^http://www.opengis.net/ont/geosparql#wktLiteral