メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.478579073674 36.4242404853603, 136.478913718213 36.4248446897421, 136.479332753368 36.4255181007254, 136.480750474753 36.4282339275133, 136.478605189828 36.4283270401247, 136.476791764648 36.4289688599735, 136.475427832751 36.4264672825831, 136.474925992198 36.4255504057289, 136.474404892727 36.4245963837467, 136.478037865551 36.423339194773, 136.478283960698 36.423604795335, 136.478579073674 36.4242404853603)) ^^http://www.opengis.net/ont/geosparql#wktLiteral