メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((130.490277876467 33.1498093696525, 130.490285776274 33.1500588940544, 130.490249701239 33.1501060697888, 130.489427589011 33.1501557764103, 130.489422509906 33.1498388337205, 130.48941926068 33.1496329273124, 130.489442525141 33.1496358232653, 130.490270896164 33.1495890940807, 130.490277876467 33.1498093696525)) ^^http://www.opengis.net/ont/geosparql#wktLiteral