メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.747208330069 35.4131666440102, 136.745556066337 35.4131136160426, 136.745572043205 35.4130186744961, 136.745632558426 35.4126456180928, 136.746203574649 35.4126727114438, 136.746208160363 35.4127504360047, 136.746310573962 35.4127569188271, 136.746313249592 35.4127303444084, 136.746335742051 35.4127304226022, 136.746340953205 35.4126875184462, 136.746508363084 35.4126921853838, 136.746505169068 35.4128271002903, 136.747224442908 35.4128537153372, 136.747208330069 35.4131666440102)) ^^http://www.opengis.net/ont/geosparql#wktLiteral