メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.378790977575 43.0553330820689, 141.379734601006 43.0553389227844, 141.379473937779 43.055657364132, 141.379082811344 43.0561405792547, 141.379069959072 43.0561610173387, 141.378512720568 43.0568946073444, 141.378422586797 43.0570084878525, 141.377718744563 43.0579480084883, 141.377031509996 43.0576940132268, 141.376928181805 43.0576558795013, 141.376144066411 43.0573627401272, 141.376638129346 43.0567919161966, 141.376818093748 43.0565860265112, 141.377010433029 43.0563662360544, 141.377385557702 43.0559374118715, 141.377583939494 43.0557106330352, 141.377901955408 43.0553317977745, 141.378790977575 43.0553330820689)) ^^http://www.opengis.net/ont/geosparql#wktLiteral