メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.473332748056 35.0099421388844, 138.474703619311 35.0106040031599, 138.475166371505 35.0108324859426, 138.474977720809 35.0111272580393, 138.474884338448 35.0114190199892, 138.47468113633 35.0113771476592, 138.474347305884 35.011339827266, 138.472535936973 35.011214240819, 138.470997174007 35.0111083370385, 138.471180680273 35.0105765823094, 138.471257760515 35.010281791498, 138.471641402241 35.0097364175773, 138.471969596411 35.0092992768412, 138.473332748056 35.0099421388844)) ^^http://www.opengis.net/ont/geosparql#wktLiteral