メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.980752931119 43.5634811484775, 144.980000357985 43.5640962408242, 144.978664615289 43.5632813463183, 144.980169233148 43.5619797415609, 144.980891599821 43.562467642406, 144.981499437167 43.5628732976109, 144.980752931119 43.5634811484775)) ^^http://www.opengis.net/ont/geosparql#wktLiteral