メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.401890965509 34.7663993291805, 137.402196759452 34.7673077817987, 137.402205122443 34.7673300194009, 137.401816406813 34.7674313433572, 137.401129150138 34.7676069090318, 137.400722760022 34.7677131926017, 137.400310659437 34.7678083592825, 137.400201415201 34.7672826360398, 137.400023798967 34.7665545029855, 137.399870444138 34.7658953399579, 137.401685040102 34.7658195683986, 137.401793901763 34.7661393683439, 137.401890965509 34.7663993291805)) ^^http://www.opengis.net/ont/geosparql#wktLiteral