メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.276300568179 44.0183460094529, 144.276203123896 44.0187918594361, 144.274675713183 44.0186456870742, 144.274772179045 44.018210767672, 144.274776785711 44.0182144103828, 144.274793788024 44.0180899809633, 144.275636147614 44.0180695082591, 144.275659806212 44.0180660955262, 144.276194463108 44.0182576211376, 144.276310669692 44.0182992860426, 144.276300568179 44.0183460094529)) ^^http://www.opengis.net/ont/geosparql#wktLiteral