メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.874351571574 35.3848608176212, 136.873354894684 35.3849488985771, 136.872365595421 35.3850464949172, 136.872288663502 35.3845887832407, 136.872206998918 35.3839665568585, 136.872402547706 35.3839409764094, 136.872383914376 35.3838034694675, 136.872591066838 35.3838031268486, 136.873173074221 35.3838253824656, 136.874274474794 35.3838567768758, 136.874271476667 35.3843952105193, 136.874351571574 35.3848608176212)) ^^http://www.opengis.net/ont/geosparql#wktLiteral