メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.92372523005 35.1982669670776, 136.923725659591 35.1986221209157, 136.923726272237 35.1989658656071, 136.922810250312 35.1989671029066, 136.922806417415 35.198618563149, 136.922802548988 35.1982672054032, 136.922800566173 35.1979383883274, 136.923732417473 35.1979399995004, 136.92372523005 35.1982669670776)) ^^http://www.opengis.net/ont/geosparql#wktLiteral