メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.947008786474 35.1382892592097, 136.946978480606 35.1382970207662, 136.946339380307 35.1384535959684, 136.946078741045 35.1384912148723, 136.945330590351 35.1385905408605, 136.945283676488 35.1383510121478, 136.945474930645 35.1382929134306, 136.945359244914 35.137995157875, 136.945455957373 35.137968364115, 136.945842057604 35.1378613988239, 136.946747742477 35.137605878676, 136.947008786474 35.1382892592097)) ^^http://www.opengis.net/ont/geosparql#wktLiteral