メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.042233603486 37.9171307870579, 139.042000645 37.9169508139749, 139.041862986579 37.9168443128922, 139.041635468369 37.9166789553772, 139.041612243329 37.9166620278539, 139.04154268257 37.9166150452238, 139.041988108715 37.9162476552158, 139.042763175622 37.9168546552628, 139.042233603486 37.9171307870579)) ^^http://www.opengis.net/ont/geosparql#wktLiteral