メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.785384038318 35.4179236888924, 136.785396825748 35.4181675572842, 136.783147362752 35.4182515869399, 136.780680343633 35.4183352836029, 136.780665947823 35.4180798265235, 136.780657666049 35.4178499156627, 136.785369858299 35.4176832674523, 136.785384038318 35.4179236888924)) ^^http://www.opengis.net/ont/geosparql#wktLiteral