メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.561383791413 42.9891551643456, 141.561236901098 42.9895439893824, 141.561135518469 42.9897435443996, 141.561084894389 42.9898372735152, 141.561024293474 42.9899021770118, 141.560856628353 42.9901134297632, 141.560217216231 42.9905782729078, 141.559813137723 42.9908761563149, 141.559375856508 42.9911828405985, 141.558846126675 42.9910780162934, 141.558494006204 42.9909743322232, 141.558164860281 42.9908509515068, 141.557957179659 42.9907633288709, 141.557750045192 42.9906270399941, 141.557095606465 42.9900377110796, 141.557666438632 42.9896074268653, 141.558251962207 42.9891604902713, 141.559072764829 42.9885466649387, 141.559986800627 42.9878481522602, 141.560588732775 42.9882454226784, 141.560797631471 42.9883864996657, 141.561561322248 42.9886559602386, 141.561383791413 42.9891551643456)) ^^http://www.opengis.net/ont/geosparql#wktLiteral