メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.392724237078 44.1801721521573, 142.392485277153 44.1809735445736, 142.392265865601 44.1809377803076, 142.391745319146 44.1808553977531, 142.391722117364 44.1808517163716, 142.390870352399 44.1807103724224, 142.390845108556 44.180706255941, 142.391297690789 44.1792313420654, 142.391372656149 44.1789870592554, 142.39303439748 44.1792552104961, 142.392724237078 44.1801721521573)) ^^http://www.opengis.net/ont/geosparql#wktLiteral