メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.927103766998 42.5743861841407, 141.926100435176 42.5748029724923, 141.925261192212 42.5751944743533, 141.924775280132 42.5753265926056, 141.924549669501 42.5753806728108, 141.924262252599 42.574893982608, 141.923430259024 42.5733531057499, 141.924265917994 42.5731177515286, 141.924353864543 42.5731053406671, 141.924448501381 42.5730921051708, 141.926138054712 42.5728545177224, 141.926217383656 42.5728475674506, 141.926327605895 42.5730410184906, 141.926783462237 42.5738427176035, 141.927021403188 42.574279886514, 141.927103766998 42.5743861841407)) ^^http://www.opengis.net/ont/geosparql#wktLiteral