メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.116631981309 37.9161781927616, 139.118958240136 37.9172198421582, 139.120560374062 37.9179303528616, 139.120037432806 37.9186631004505, 139.118439732138 37.9179525581913, 139.117658762101 37.9176144304496, 139.1168838987 37.9172726048698, 139.116121043651 37.9169419734169, 139.115345676073 37.9165911290704, 139.115864198069 37.915835899232, 139.116376689697 37.9160643733017, 139.116631981309 37.9161781927616)) ^^http://www.opengis.net/ont/geosparql#wktLiteral