メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.935961891697 34.9352012669775, 136.9335842089 34.9353749523187, 136.933495194717 34.9345223982124, 136.933453243914 34.9341205797408, 136.934260050791 34.9340625564473, 136.935822933239 34.9339564587339, 136.935961891697 34.9352012669775)) ^^http://www.opengis.net/ont/geosparql#wktLiteral