メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.351846276742 31.6275377151748, 131.351339877038 31.62743903615, 131.351238716284 31.6274095751377, 131.351105790016 31.6273531422139, 131.350989530999 31.6273161113291, 131.350825597626 31.6272487694485, 131.34991645751 31.6272970517501, 131.349532668589 31.6265218273459, 131.350357273573 31.6262451815014, 131.350794001263 31.6261146107706, 131.351015765642 31.6260777848319, 131.351112122932 31.6260675148462, 131.351275074483 31.6260827133107, 131.35146311524 31.6261334992853, 131.352207819842 31.6263469491388, 131.352154414744 31.6265551159764, 131.352095660565 31.6267313048959, 131.351846276742 31.6275377151748)) ^^http://www.opengis.net/ont/geosparql#wktLiteral