メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.910912734049 35.4972913980244, 136.90970989973 35.4972922582724, 136.909691490656 35.4974417912463, 136.908634651309 35.4974065145765, 136.9086616544 35.497020143368, 136.908718021793 35.4964516238052, 136.90941014808 35.4964499977264, 136.909637251654 35.496456184721, 136.909633312176 35.4965646936441, 136.909755211851 35.4965825579575, 136.909988292389 35.4965977012724, 136.910518818311 35.4966838956896, 136.910529934889 35.4965724806388, 136.911140543362 35.4965981050013, 136.910912734049 35.4972913980244)) ^^http://www.opengis.net/ont/geosparql#wktLiteral