メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.658444201886 36.1775872686886, 139.656119763464 36.178538717552, 139.655819808799 36.1786563054202, 139.655320418294 36.1788621052857, 139.654485143383 36.177527746122, 139.655197358413 36.1772272604703, 139.657593694585 36.1762302365158, 139.658444201886 36.1775872686886)) ^^http://www.opengis.net/ont/geosparql#wktLiteral