メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.356878296179 43.7401257534844, 142.356218410756 43.7412680786361, 142.355510190736 43.7410567022906, 142.354850582209 43.7408598159374, 142.35320497497 43.7404044985021, 142.354465794639 43.7382757447687, 142.35461457967 43.7380547101827, 142.356824415191 43.738750298414, 142.356829877224 43.7387405369291, 142.357532216846 43.7389639356816, 142.356878296179 43.7401257534844)) ^^http://www.opengis.net/ont/geosparql#wktLiteral