メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.574163145 42.8851927837013, 141.574409373 42.8853420056502, 141.57484040862 42.8857435416269, 141.575251201404 42.8861647178302, 141.575325549798 42.8862408332267, 141.575625368191 42.8865462907281, 141.574169899543 42.8874048788726, 141.573384595522 42.8878670211045, 141.572785521391 42.8882266646827, 141.57196985207 42.8874391162081, 141.571845663884 42.887342377395, 141.57182318707 42.8873248721816, 141.571590355979 42.8872011854566, 141.571372277962 42.8871363821727, 141.570698092937 42.8869386867503, 141.570764907184 42.8867764069582, 141.571006634307 42.8863318033179, 141.571410590386 42.8858456106989, 141.571626239704 42.8856684598331, 141.572608725646 42.8848353721477, 141.573022041445 42.8844841245173, 141.573292860787 42.8846624708887, 141.573401065164 42.8847424452464, 141.574163145 42.8851927837013)) ^^http://www.opengis.net/ont/geosparql#wktLiteral