メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.350086857336 43.8163235816441, 142.35182483618 43.8173090769832, 142.351403393218 43.8175953730923, 142.351273754788 43.8176973117804, 142.350865852265 43.8179973070872, 142.350336404016 43.8183855180961, 142.349839367244 43.8187541147692, 142.349212647056 43.8192129006194, 142.348096808638 43.8183506055706, 142.347688017739 43.8180450718166, 142.346675216734 43.8172508361331, 142.346436923444 43.8170708714814, 142.347047424809 43.8166199371457, 142.347555276994 43.816247423362, 142.348071211923 43.8158651088469, 142.348606039481 43.8154612387075, 142.350086857336 43.8163235816441)) ^^http://www.opengis.net/ont/geosparql#wktLiteral