メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.631642795162 35.3598991782095, 136.631633255517 35.3601269534062, 136.630722511016 35.3600695353571, 136.630749681135 35.359847472336, 136.630244229015 35.3598133982284, 136.63026748348 35.3592475155415, 136.631698077478 35.3593242117738, 136.631642795162 35.3598991782095)) ^^http://www.opengis.net/ont/geosparql#wktLiteral