メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.705470127152 44.3596655800277, 141.705369365698 44.3597301747924, 141.704167641003 44.3605007058868, 141.703191789436 44.3596968613635, 141.703130903509 44.3596466804302, 141.704082864902 44.3590331739817, 141.704149921699 44.3590839113921, 141.704779026594 44.359559721022, 141.704976454007 44.3594339222272, 141.705101512863 44.3593542549513, 141.705470127152 44.3596655800277)) ^^http://www.opengis.net/ont/geosparql#wktLiteral