メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.372762627874 34.9788979322276, 138.372597570987 34.9789491723278, 138.37249737262 34.9789216721212, 138.372392143384 34.978770427736, 138.372319000463 34.9788029593438, 138.372146090853 34.9785314257052, 138.37200606937 34.9785982556595, 138.371847524984 34.9784882248665, 138.371846568507 34.9784280793672, 138.372005398047 34.9783578897173, 138.372017963846 34.9783303659155, 138.37246328684 34.9781457475557, 138.372867262474 34.9787571874653, 138.372762627874 34.9788979322276)) ^^http://www.opengis.net/ont/geosparql#wktLiteral