メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.377595080899 42.9893927707806, 144.379353301086 42.9896920446345, 144.378981171938 42.990760720327, 144.378512819481 42.9906581153899, 144.377254399432 42.9904574795502, 144.377043058322 42.9904237874486, 144.376505168544 42.99033801041, 144.376513807761 42.9903107734707, 144.376824952167 42.9893225007359, 144.376850595171 42.9892661121449, 144.377595080899 42.9893927707806)) ^^http://www.opengis.net/ont/geosparql#wktLiteral