メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.120793615991 36.7587141379019, 137.119622919376 36.7588801312129, 137.118843137266 36.7589820572638, 137.118152749443 36.7590723254685, 137.118055055573 36.7585553653312, 137.118934538844 36.7582731039434, 137.120135345377 36.7578288870312, 137.120560657174 36.7576709163763, 137.120705434806 36.7582756876357, 137.120793615991 36.7587141379019)) ^^http://www.opengis.net/ont/geosparql#wktLiteral