メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.830824232915 34.6893285824586, 135.830690084344 34.6893247344243, 135.830688404756 34.6890494885768, 135.830680037129 34.6887612750933, 135.830678750811 34.6887331010376, 135.830879850122 34.6887288723706, 135.831896537995 34.6887075988347, 135.831902187395 34.689300209818, 135.831368581807 34.6893062347975, 135.830824232915 34.6893285824586)) ^^http://www.opengis.net/ont/geosparql#wktLiteral