メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.64656201248 35.3794916985108, 136.645467131504 35.3794272011943, 136.64560153406 35.3780704530577, 136.645730637808 35.3769562946421, 136.645752330996 35.3766167413636, 136.647424797963 35.3767370848931, 136.647936700725 35.3771755429546, 136.647686472007 35.3795768756199, 136.64656201248 35.3794916985108)) ^^http://www.opengis.net/ont/geosparql#wktLiteral