メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.975119970591 38.2724529688522, 140.975939074162 38.2713250706886, 140.976257081223 38.2715917965014, 140.975921311605 38.2718947200212, 140.975905920476 38.271922011188, 140.975497773973 38.2726050649932, 140.975119970591 38.2724529688522)) ^^http://www.opengis.net/ont/geosparql#wktLiteral