メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.961248576524 43.5495749056615, 144.961128844872 43.5494964234648, 144.960730875795 43.5492198824002, 144.960250198386 43.5488969932327, 144.960201886999 43.5488717347185, 144.960956249397 43.5482787360548, 144.961491553495 43.5486297555311, 144.96200873183 43.5489688600221, 144.961248576524 43.5495749056615)) ^^http://www.opengis.net/ont/geosparql#wktLiteral