メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.984429409344 43.5531169527853, 144.984072551399 43.5528843387337, 144.983921467104 43.5527847271265, 144.98377928576 43.5526810004149, 144.983478576311 43.552483992393, 144.984145261254 43.5519360403339, 144.984371601793 43.5520706967171, 144.984592100221 43.5522129109656, 144.985093138656 43.5525294076533, 144.984429409344 43.5531169527853)) ^^http://www.opengis.net/ont/geosparql#wktLiteral