メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.929770461267 43.8284366012367, 143.930443421151 43.8291225621344, 143.929167121563 43.829788875704, 143.928362357548 43.8301871838416, 143.927700912466 43.8305145894353, 143.926131027178 43.8293848659229, 143.92560098063 43.8290141164591, 143.926233918648 43.8286955618251, 143.927484260094 43.8280662292588, 143.927849566394 43.8278823371169, 143.928273489781 43.8276689468011, 143.928771344477 43.8274182852248, 143.929770461267 43.8284366012367)) ^^http://www.opengis.net/ont/geosparql#wktLiteral