メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.836731402973 35.5014747199301, 136.834619037686 35.5014194787275, 136.83475751744 35.5000195135317, 136.833052108444 35.4999851506191, 136.833169068581 35.4971072077646, 136.83509160268 35.4971591082069, 136.836593445585 35.4971957091335, 136.836540807201 35.4987059134282, 136.836513785429 35.4989893182837, 136.836530176428 35.4992008723096, 136.8366171909 35.4995220216732, 136.836697127245 35.4997090340562, 136.836790872425 35.4999842871642, 136.836769159101 35.5002380592508, 136.836731402973 35.5014747199301)) ^^http://www.opengis.net/ont/geosparql#wktLiteral