メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.343301241394 43.0251770034808, 141.343771884843 43.025217093931, 141.344016039258 43.0252362581734, 141.343925903355 43.0259551674871, 141.343841810322 43.0266411400894, 141.343134212976 43.0265929132626, 141.343118701378 43.0265917352437, 141.342565344086 43.026549932426, 141.342000039013 43.0265124621292, 141.342070477163 43.0258893988206, 141.342102499692 43.0258499859561, 141.342142643048 43.0257994557262, 141.342425017216 43.0254497607062, 141.342636854315 43.0251249660685, 141.343301241394 43.0251770034808)) ^^http://www.opengis.net/ont/geosparql#wktLiteral