メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.172934481313 33.9859312654156, 131.172860252472 33.9868249308148, 131.172840751793 33.9870696158036, 131.172787058329 33.9876952361452, 131.171769944153 33.9876355993989, 131.17158041235 33.9876244875716, 131.171092686928 33.9875957491067, 131.170452862064 33.9875581709044, 131.16994882804 33.9875285909879, 131.169098855569 33.9874787380847, 131.169010840227 33.9874708398321, 131.168886365596 33.9862543677795, 131.168754373058 33.9852043625924, 131.171784520132 33.9853513042761, 131.172965304693 33.9854255002757, 131.172934481313 33.9859312654156)) ^^http://www.opengis.net/ont/geosparql#wktLiteral