メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.344509286934 43.1404170683642, 141.345377791751 43.1403040778864, 141.345554138788 43.1410136704293, 141.345575551019 43.1411053362588, 141.34563363211 43.1413547546526, 141.345721201539 43.1417148911397, 141.346000669756 43.1430403835672, 141.346149792521 43.1437475098013, 141.345727932527 43.143821690345, 141.345276123319 43.1439011885946, 141.343576409344 43.1441110773616, 141.343098763008 43.1420568871048, 141.342996574247 43.1416212400955, 141.342905501002 43.1412133195889, 141.342769021459 43.1406416677286, 141.344509286934 43.1404170683642)) ^^http://www.opengis.net/ont/geosparql#wktLiteral