メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.567108471527 42.9816508382787, 141.567031249194 42.9821373564505, 141.566818271897 42.9829629780674, 141.566795308991 42.9830469585159, 141.566731574694 42.9832447032252, 141.566567728992 42.9838757982003, 141.566127104179 42.9838474280463, 141.566045985659 42.9838458184887, 141.565841554521 42.9838419952383, 141.565997345318 42.9833463117076, 141.566074680621 42.9831446397877, 141.566121720172 42.9829754911846, 141.566129169927 42.9828693342737, 141.566119812902 42.9827281933158, 141.56611340127 42.9826324325457, 141.566071124501 42.9822764416539, 141.566047880403 42.9820615801549, 141.566047265189 42.9818186498609, 141.566048459961 42.981710767625, 141.566055857837 42.9816741689804, 141.566015447877 42.9810676661989, 141.566036188835 42.9808555285341, 141.566128577302 42.980357989659, 141.567246214746 42.9805290216037, 141.567167208863 42.9811726505727, 141.567108471527 42.9816508382787)) ^^http://www.opengis.net/ont/geosparql#wktLiteral