メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.381914930015 43.0840832639408, 141.382145301632 43.0845310356884, 141.380806673227 43.0851070039558, 141.380140445061 43.0853866362899, 141.380069140869 43.0851777805646, 141.379966288051 43.0848796479976, 141.379790387119 43.0843876265709, 141.380480442482 43.0842067780119, 141.38100950508 43.083970621665, 141.381706518307 43.0836772920877, 141.381914930015 43.0840832639408)) ^^http://www.opengis.net/ont/geosparql#wktLiteral