メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.15731270047 34.6539168631623, 135.157646548241 34.6540295423645, 135.157571752187 34.6541878086677, 135.157499928646 34.6543708456335, 135.157443998684 34.6545064470058, 135.15726576797 34.6549606495816, 135.156081498823 34.6546238413129, 135.156270777699 34.654183087978, 135.156284101155 34.6541514459339, 135.156363907876 34.6539480722676, 135.15648638896 34.6536475003535, 135.15731270047 34.6539168631623)) ^^http://www.opengis.net/ont/geosparql#wktLiteral