メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.386572793936 43.7551635129684, 142.38657312035 43.7551737469164, 142.386601706719 43.7553822873706, 142.386628578372 43.7557204863345, 142.385432258905 43.7560526182651, 142.385380919119 43.755974427715, 142.385164642957 43.7555715979485, 142.385037086453 43.7553448016242, 142.385462250629 43.7552080301578, 142.386027369337 43.7550264734013, 142.386550498741 43.7548584022638, 142.386552176373 43.7548578530073, 142.386566472139 43.7549654802283, 142.386572793936 43.7551635129684)) ^^http://www.opengis.net/ont/geosparql#wktLiteral