メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.80065233347 35.2976230789749, 136.800584852828 35.2984089398257, 136.800007300332 35.2983641588797, 136.799992960436 35.2983629885556, 136.799311458482 35.2982928876719, 136.799100673387 35.2982717532682, 136.799004167875 35.2982620927769, 136.799570690558 35.2969123916562, 136.799711229821 35.2969479607503, 136.800156498448 35.2970768497621, 136.800269906585 35.2971096595177, 136.800681391222 35.297139570065, 136.80065233347 35.2976230789749)) ^^http://www.opengis.net/ont/geosparql#wktLiteral