メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.7376871275 35.1818809023646, 136.736695196829 35.1819300518244, 136.736546173142 35.180193197692, 136.73746152753 35.1801437067899, 136.738550555007 35.1800741211438, 136.738683428556 35.1810383162162, 136.737600033203 35.1810376424204, 136.7376871275 35.1818809023646)) ^^http://www.opengis.net/ont/geosparql#wktLiteral