メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.874146480024 43.0109857601452, 142.874136211069 43.0109795559474, 142.873357648671 43.0105111071813, 142.87347586827 43.0104077839717, 142.873874274072 43.0100596665171, 142.874351894663 43.0096421938555, 142.875051785422 43.0100600057505, 142.875145390932 43.0101142115868, 142.874923037424 43.0103106581675, 142.874466543614 43.0107138117694, 142.874146480024 43.0109857601452)) ^^http://www.opengis.net/ont/geosparql#wktLiteral