メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.38483580014 42.985834800605, 144.383214198524 42.985539119751, 144.383402854965 42.9849564553213, 144.385024573834 42.9852448185332, 144.38483580014 42.985834800605)) ^^http://www.opengis.net/ont/geosparql#wktLiteral