メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.733715664966 35.407399448133, 136.732358457056 35.4070364127862, 136.732538478352 35.4062652512057, 136.732566561115 35.4061123992025, 136.732786269817 35.405140610016, 136.732913615719 35.4044875645534, 136.734296889433 35.4046811123652, 136.73400644708 35.4060013034955, 136.733715664966 35.407399448133)) ^^http://www.opengis.net/ont/geosparql#wktLiteral