メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.498828233571 35.6581991232164, 140.498362383945 35.6585640626475, 140.498202906762 35.6584193822095, 140.498004579474 35.6582248816113, 140.497859570582 35.6580975490652, 140.498000542232 35.6579809704676, 140.498157432986 35.6578432834646, 140.498317776721 35.6577266324536, 140.498783935271 35.6581479256832, 140.498828233571 35.6581991232164)) ^^http://www.opengis.net/ont/geosparql#wktLiteral