メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.875486533095 35.2296215948021, 136.874245046113 35.2296327405081, 136.873565055886 35.2296458756728, 136.873372312153 35.229561953131, 136.8738458298 35.2287383629247, 136.87386143567 35.2287071328004, 136.874229520032 35.2287134497937, 136.875423398036 35.2287034576422, 136.875476137953 35.2287035852478, 136.875483897531 35.2291838290906, 136.875486533095 35.2296215948021)) ^^http://www.opengis.net/ont/geosparql#wktLiteral