メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.979007104887 43.5518762217473, 144.978441549677 43.551457659627, 144.978432879075 43.5514498155398, 144.978841538616 43.5511476341239, 144.979224104013 43.5508756790795, 144.979943256211 43.5503715383668, 144.980473090195 43.5506885631745, 144.979759786292 43.5512665069924, 144.979007104887 43.5518762217473)) ^^http://www.opengis.net/ont/geosparql#wktLiteral