メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.957526212731 43.5436733501389, 144.957468502846 43.5437187371139, 144.95697226719 43.5433923684215, 144.957829664903 43.5427479721364, 144.957921189593 43.542810073039, 144.958479107475 43.5431883122479, 144.957925276282 43.543630349602, 144.957740768146 43.5435082201335, 144.957526212731 43.5436733501389)) ^^http://www.opengis.net/ont/geosparql#wktLiteral