メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.362913905724 38.3494543601791, 140.362094674606 38.3495397563152, 140.361290265055 38.3496204205505, 140.361212386344 38.3491759627391, 140.361118008456 38.348746781686, 140.362713691637 38.3485818782861, 140.363545754004 38.3484869557466, 140.363712285598 38.3493726750156, 140.362913905724 38.3494543601791)) ^^http://www.opengis.net/ont/geosparql#wktLiteral