メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.856840570549 35.885929259057, 139.855032893775 35.8856277954478, 139.855116598868 35.8853089128634, 139.855144907933 35.8851916005705, 139.856953799895 35.8854719986885, 139.856840570549 35.885929259057)) ^^http://www.opengis.net/ont/geosparql#wktLiteral