メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.317104549249 42.2929763355409, 143.317448203248 42.2931691016065, 143.31754186294 42.2935428493418, 143.317594982256 42.293815970216, 143.317360205535 42.2943708669904, 143.317278698645 42.2945093474626, 143.317074889626 42.2943342725167, 143.316298445963 42.2940061172702, 143.31568995064 42.2937491250523, 143.315620200508 42.2937196665869, 143.316433191949 42.2926934844547, 143.316560000676 42.2927468894593, 143.317104549249 42.2929763355409)) ^^http://www.opengis.net/ont/geosparql#wktLiteral