メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.331080762341 43.0838273583931, 141.331078117882 43.0845434972379, 141.331074501439 43.0855493835138, 141.330573104035 43.085533113695, 141.330568211906 43.0856292141435, 141.329281025485 43.0856341134441, 141.32991371151 43.0851936041285, 141.329913397638 43.0851888898987, 141.329905368809 43.0850457763727, 141.329881945865 43.0846298029419, 141.329854995348 43.0841032434751, 141.32981802204 43.0836823087378, 141.330552070872 43.0837700084721, 141.331080762341 43.0838273583931)) ^^http://www.opengis.net/ont/geosparql#wktLiteral