メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.165601333789 34.9788817615821, 137.165946957896 34.9792974248201, 137.166028544657 34.9798561928405, 137.164978187196 34.9800661925004, 137.164202133797 34.9802215374622, 137.162519746019 34.9805486181574, 137.161828546445 34.9806747945653, 137.161246514764 34.9789019176333, 137.161928270346 34.9787604607066, 137.16467818099 34.9782043823645, 137.164993535888 34.9781469192075, 137.165557687681 34.978828729748, 137.165601333789 34.9788817615821)) ^^http://www.opengis.net/ont/geosparql#wktLiteral