メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.531659529133 44.0669823909524, 143.528479564661 44.0679935584612, 143.528499347806 44.0680246109527, 143.527434550242 44.0683643713977, 143.526996247376 44.0685041813707, 143.526940454991 44.0685220017503, 143.526876146536 44.0685428497156, 143.526851835701 44.0685007982902, 143.526020902626 44.0671075935743, 143.52596840999 44.0670020615202, 143.5260676776 44.0669697184669, 143.526183893204 44.0669318449759, 143.526442473113 44.0668475950128, 143.527561232801 44.0664830621558, 143.527567397206 44.066493054216, 143.530728939509 44.0654446417999, 143.531659529133 44.0669823909524)) ^^http://www.opengis.net/ont/geosparql#wktLiteral