メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.385855395354 43.7476344714448, 142.385860602435 43.7476955048267, 142.38589976011 43.7481133614858, 142.385917346239 43.7482223222097, 142.382722604367 43.7491567503451, 142.382679042699 43.7488971021065, 142.382617153106 43.7485865815597, 142.382570198488 43.7482681317366, 142.382511695751 43.7479580635479, 142.383874466953 43.7475259963697, 142.385791746152 43.7469500195088, 142.385855395354 43.7476344714448)) ^^http://www.opengis.net/ont/geosparql#wktLiteral