メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.395844729079 43.0846373880169, 141.396096568654 43.084969959296, 141.396299084662 43.0852480072814, 141.395734031414 43.0854757308159, 141.39445293945 43.0859966334545, 141.394147551782 43.0855887648178, 141.393875866311 43.0852350829531, 141.393576818078 43.0848416003871, 141.394848152558 43.0843110613488, 141.395404342585 43.0840853155088, 141.395607153089 43.0843417759632, 141.395844729079 43.0846373880169)) ^^http://www.opengis.net/ont/geosparql#wktLiteral