メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.450555324913 42.9245035900399, 143.450975440027 42.9245330487479, 143.450975407919 42.9245332876449, 143.450969223371 42.92457637258, 143.450920664031 42.9249145481782, 143.450868228843 42.9252797405938, 143.450823432592 42.9255917313393, 143.450813467208 42.9256626747273, 143.450414750138 42.925632710847, 143.44982995943 42.9255913040896, 143.44981881661 42.9255905423573, 143.449837469341 42.9254429014234, 143.449963240151 42.9244621003327, 143.449987196651 42.9244637700777, 143.450038850973 42.9244673718745, 143.450555324913 42.9245035900399)) ^^http://www.opengis.net/ont/geosparql#wktLiteral