メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.735679373621 35.1802489104995, 136.736546173142 35.180193197692, 136.736695196829 35.1819300518244, 136.73682897904 35.1833291774368, 136.734938189054 35.1834450390961, 136.734745936126 35.1814300741966, 136.734653516406 35.180310387056, 136.735679373621 35.1802489104995)) ^^http://www.opengis.net/ont/geosparql#wktLiteral