メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.447827032274 42.9281613836473, 143.447824839346 42.928180214994, 143.447689084443 42.9292840850722, 143.447685560155 42.9293109639507, 143.447328665658 42.9292858653168, 143.446962179584 42.9292600377381, 143.446834960926 42.9292502718941, 143.446840816032 42.9292139217074, 143.446983484014 42.928109327739, 143.446984293716 42.9281028097459, 143.447777215197 42.928157921842, 143.447827032274 42.9281613836473)) ^^http://www.opengis.net/ont/geosparql#wktLiteral