メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.926419057649 43.5950214396244, 141.926643822373 43.5955072571517, 141.925174005086 43.5958946871593, 141.923553980652 43.5962903236563, 141.922780885067 43.5964861629905, 141.922466357974 43.5958664009991, 141.922162642753 43.5955541872346, 141.922191447881 43.5955461480819, 141.922215358368 43.5955394992231, 141.922235830884 43.5955690219869, 141.922381293143 43.5955222133206, 141.922366141021 43.5954974880345, 141.922434409395 43.59547848294, 141.9230835335 43.5953077522058, 141.924681305852 43.5948900134341, 141.926181914607 43.5945170920992, 141.926419057649 43.5950214396244)) ^^http://www.opengis.net/ont/geosparql#wktLiteral