メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.801346792048 35.2966322835272, 136.801308092306 35.2969299863232, 136.80070404927 35.2968950575555, 136.800681391222 35.297139570065, 136.800269906585 35.2971096595177, 136.800156498448 35.2970768497621, 136.799711229821 35.2969479607503, 136.799876567205 35.296540852142, 136.800068787706 35.2961624882724, 136.800548349687 35.2962094364373, 136.800969528325 35.2962509253377, 136.801377289667 35.2962960337341, 136.801346792048 35.2966322835272)) ^^http://www.opengis.net/ont/geosparql#wktLiteral