メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.987130202904 33.731780105285, 135.985760433932 33.7321782774372, 135.985498593672 33.7316089625563, 135.985871650485 33.7314740283409, 135.985944679557 33.7313776720122, 135.986966929825 33.7310856985033, 135.987130202904 33.731780105285)) ^^http://www.opengis.net/ont/geosparql#wktLiteral