メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.338152537725 43.0626174298815, 141.338635147148 43.0626787371073, 141.338500766325 43.0632677299038, 141.338485824425 43.0633181075214, 141.338419299663 43.0635805384515, 141.338341165645 43.0638884511029, 141.337798019177 43.0638079511683, 141.337280242298 43.0637372871408, 141.336773284217 43.0636680431335, 141.336928300162 43.0630664182425, 141.336945216166 43.0629930587888, 141.337066309621 43.062466555783, 141.337567382197 43.0625439793464, 141.338152537725 43.0626174298815)) ^^http://www.opengis.net/ont/geosparql#wktLiteral