メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.370043390869 43.0741678235767, 141.370077941904 43.0741668234336, 141.370168128123 43.0744546008827, 141.370200695977 43.0745587279971, 141.370254307194 43.074720826876, 141.370271245955 43.0748041568012, 141.36973504104 43.0751269965297, 141.36941461274 43.0753211738472, 141.369076129434 43.0755164770804, 141.368762221733 43.0757106316813, 141.36847494583 43.0760076718718, 141.368177571393 43.0758581821011, 141.36765828997 43.0756889070437, 141.367278199145 43.0755676833263, 141.367104503174 43.075510924861, 141.367965058907 43.0749694807855, 141.368047832379 43.0749173711656, 141.368742150973 43.0744738751912, 141.369396280355 43.0740759914533, 141.370043390869 43.0741678235767)) ^^http://www.opengis.net/ont/geosparql#wktLiteral