メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.115107983014 37.8066551202325, 139.11335313381 37.8067211250855, 139.113351000195 37.8064670975035, 139.113293801576 37.8052816754795, 139.115500439502 37.8051883547424, 139.11557728611 37.8062646788531, 139.115581287735 37.8065238412511, 139.115585639127 37.8066371494239, 139.115107983014 37.8066551202325)) ^^http://www.opengis.net/ont/geosparql#wktLiteral