メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.735690026649 35.4376654204547, 136.735608221205 35.4378792365601, 136.735522861614 35.4381138487007, 136.732619667015 35.4376563388675, 136.732714183228 35.4375205585794, 136.732761157157 35.4374495694211, 136.732905037127 35.4372543917906, 136.735690026649 35.4376654204547)) ^^http://www.opengis.net/ont/geosparql#wktLiteral