メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.042660734762 42.9139400293371, 143.042639585666 42.9140404688075, 143.041792665546 42.9139768297675, 143.041214039377 42.9139268303643, 143.041242786618 42.9136850317528, 143.040252846868 42.9136152367456, 143.040431015079 42.912454597509, 143.041734389585 42.9125606726769, 143.042809041211 42.9126335704872, 143.042751567097 42.9131396557334, 143.042705697607 42.9135436785071, 143.042660734762 42.9139400293371)) ^^http://www.opengis.net/ont/geosparql#wktLiteral