メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.987254300605 34.9025508513202, 136.986548511494 34.9026279132655, 136.985858814444 34.9026654135205, 136.985759144157 34.9009507484447, 136.986861629427 34.9007830052013, 136.986864026129 34.9008113911673, 136.987254300605 34.9025508513202)) ^^http://www.opengis.net/ont/geosparql#wktLiteral