メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.397038607482 44.1705712809165, 142.395700642844 44.1703587652582, 142.395955368107 44.1695998121962, 142.397285093715 44.1698214421717, 142.397038607482 44.1705712809165)) ^^http://www.opengis.net/ont/geosparql#wktLiteral