メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.322562305037 43.0653345109201, 141.322756950532 43.0653649254654, 141.323447886105 43.0654532346831, 141.323296547535 43.0660050035433, 141.323164223312 43.0665169101045, 141.32240107776 43.0664264654136, 141.322013803839 43.0663777488975, 141.322034767726 43.0661963305861, 141.322048832432 43.0658302421342, 141.322130494182 43.0652817770022, 141.322449033414 43.0653210033428, 141.322562305037 43.0653345109201)) ^^http://www.opengis.net/ont/geosparql#wktLiteral