メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.900829196842 43.4758172921292, 141.901115846345 43.476787126674, 141.901162863088 43.4767807288642, 141.901167368807 43.4767988517958, 141.901169711831 43.4768111297782, 141.901088430221 43.4768227686898, 141.899687601564 43.4770431237754, 141.899518734623 43.4764186210675, 141.899415015902 43.4760582440276, 141.89937194761 43.4759086028343, 141.899188818216 43.4753008285977, 141.899098552498 43.4750105700232, 141.900526734502 43.4747910078712, 141.90081361693 43.4757644661847, 141.900829196842 43.4758172921292)) ^^http://www.opengis.net/ont/geosparql#wktLiteral