メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.307482765804 43.0800405545769, 141.308259452634 43.0807467926752, 141.308613167532 43.0810748338831, 141.308574856585 43.0810954764939, 141.30769187047 43.0815714388298, 141.307679778202 43.0815779503963, 141.30725903152 43.081804741519, 141.307078773361 43.0819094532271, 141.307035818917 43.081932589359, 141.306514450366 43.0822136162369, 141.305831976223 43.0815891627861, 141.305670108129 43.0814397145594, 141.304941733918 43.0807626222029, 141.30518394976 43.0806219245844, 141.305437199807 43.0804748477306, 141.305898971718 43.0802066265961, 141.306350962805 43.0799440888168, 141.306373324869 43.0799311220512, 141.306976811354 43.0795805841681, 141.307148079621 43.0797362970146, 141.307482765804 43.0800405545769)) ^^http://www.opengis.net/ont/geosparql#wktLiteral