メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.908700139446 43.4968325068346, 141.907878010457 43.4969489051988, 141.907555014064 43.4958357290154, 141.908356761317 43.495725424277, 141.908700139446 43.4968325068346)) ^^http://www.opengis.net/ont/geosparql#wktLiteral