メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.764095969671 35.4251864759857, 136.764086154407 35.4251532408125, 136.763708753325 35.425243787711, 136.763601134604 35.4249479178309, 136.763542652188 35.4247103753894, 136.763937795478 35.4246156989831, 136.764252245808 35.4245283232787, 136.76447455794 35.4244665936947, 136.764639606536 35.425083236958, 136.764095969671 35.4251864759857)) ^^http://www.opengis.net/ont/geosparql#wktLiteral