メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.038229495229 42.9176376065442, 143.038948169607 42.9176925192926, 143.038892963493 42.9180042586788, 143.038843476971 42.9183255949732, 143.038773988172 42.9187742282271, 143.03875879442 42.9188770881694, 143.038070442882 42.9188185900569, 143.037340518165 42.9187566461065, 143.037351021124 42.9186721053223, 143.037518294576 42.917583341966, 143.037520689525 42.917583466864, 143.038229495229 42.9176376065442)) ^^http://www.opengis.net/ont/geosparql#wktLiteral