メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.313461141884 37.0772758770581, 138.31246560522 37.0775935881045, 138.311518014356 37.0779069337366, 138.311082522431 37.0779636922268, 138.310761095284 37.0774892290288, 138.31056368191 37.0771498545336, 138.310891888075 37.077031184175, 138.310631846156 37.0765801216156, 138.310971463736 37.0764645675991, 138.310736081311 37.0760609253511, 138.311388736192 37.0758023158391, 138.311200800817 37.0754857690972, 138.311412327836 37.0754425952984, 138.311570772905 37.0757464246345, 138.312056461098 37.0755590069489, 138.312686570219 37.076635755806, 138.313037390724 37.0765016265509, 138.313461141884 37.0772758770581)) ^^http://www.opengis.net/ont/geosparql#wktLiteral