メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.973394579379 43.5394065918642, 144.973343401465 43.5393734605909, 144.972625592556 43.5389103313672, 144.973516874028 43.5382336778615, 144.973577289669 43.5381844205799, 144.974256520547 43.5386366153332, 144.974287213102 43.5386570486426, 144.973836227585 43.5390225280207, 144.973849483134 43.5390421108566, 144.973835828127 43.5390608250998, 144.973394579379 43.5394065918642)) ^^http://www.opengis.net/ont/geosparql#wktLiteral