メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.624507145238 34.9399507209486, 136.624527366134 34.939774970525, 136.626401264598 34.9399378289083, 136.626235654874 34.9412351223183, 136.62437253467 34.9411160782931, 136.623730770318 34.941066895478, 136.623296946916 34.9410274214915, 136.6227536335 34.9410365379391, 136.622673372471 34.9399198923637, 136.623296677661 34.9398986757897, 136.623499769334 34.9398894665716, 136.624507145238 34.9399507209486)) ^^http://www.opengis.net/ont/geosparql#wktLiteral