メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.375179075377 43.7454159750985, 142.374971961389 43.7457860920828, 142.374606060603 43.7456175414605, 142.372861391603 43.7462095725961, 142.371608124901 43.7466289830379, 142.371355592639 43.7462980697378, 142.371063010831 43.7459231080104, 142.372305825185 43.745503731311, 142.373458714793 43.7451222015511, 142.373661195348 43.7452120489646, 142.374031894923 43.7445763120369, 142.374579373295 43.7447402027305, 142.374700133368 43.7447795402796, 142.375317787803 43.7449624437358, 142.375419833055 43.7449983021396, 142.375179075377 43.7454159750985)) ^^http://www.opengis.net/ont/geosparql#wktLiteral