メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.265777599471 35.2306599929714, 136.264644731301 35.2312241869267, 136.264484971851 35.2309034683644, 136.264357538447 35.2307648677952, 136.263346717726 35.2313121627489, 136.263034096262 35.2308431063581, 136.26409516101 35.2303344383198, 136.265098601581 35.2297999702949, 136.265777599471 35.2306599929714)) ^^http://www.opengis.net/ont/geosparql#wktLiteral