メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.008139847737 34.9245874373969, 137.00562380382 34.9278663844114, 137.005296671295 34.9278177854933, 137.004725663499 34.9277268236951, 137.004174691059 34.9276241238816, 137.002059990788 34.9272885629081, 137.002380502953 34.9261623593196, 137.002425806338 34.9261386863585, 137.002998692744 34.9241818401691, 137.003163195032 34.9239441538832, 137.004222588454 34.9225585519613, 137.008139847737 34.9245874373969)) ^^http://www.opengis.net/ont/geosparql#wktLiteral