メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.375934244197 42.9759503255415, 144.376448241612 42.976163562657, 144.376215580758 42.976504545154, 144.375568383614 42.9768061871699, 144.375037251337 42.9768518570787, 144.374942103397 42.976447557406, 144.374682904836 42.9756125977525, 144.37471621785 42.9755954521174, 144.375463197802 42.9757494382423, 144.375701637249 42.9758539422411, 144.375934244197 42.9759503255415)) ^^http://www.opengis.net/ont/geosparql#wktLiteral