メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.176288313888 34.2246916753407, 135.176140161134 34.2246846219698, 135.17575153952 34.2244153516559, 135.175655760572 34.2243677996615, 135.175719084503 34.2241690422175, 135.175869312817 34.2241979442064, 135.175997192156 34.2242405000783, 135.176042196599 34.2241991066323, 135.176287490004 34.2242007555048, 135.176288313888 34.2246916753407)) ^^http://www.opengis.net/ont/geosparql#wktLiteral