メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.884467687612 43.8181816348503, 143.885868132555 43.8182605747787, 143.88575797786 43.8191907571416, 143.885739294716 43.8191894261877, 143.885641221713 43.8200143960174, 143.884254665902 43.8199192212521, 143.882787267556 43.8198225633476, 143.882144730023 43.8197802387105, 143.882323661042 43.8182147948301, 143.88234184522 43.8180554367527, 143.884467687612 43.8181816348503)) ^^http://www.opengis.net/ont/geosparql#wktLiteral