メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.117055612421 43.5381526054745, 142.114323077976 43.5379230897538, 142.114286182658 43.5379575060032, 142.114275536883 43.5380110452979, 142.113592556011 43.5379715621736, 142.113846191862 43.5364295429656, 142.114309706922 43.5364100815357, 142.11506827312 43.5363626234471, 142.115973300914 43.5364301349015, 142.117311475318 43.5365253189159, 142.117079116207 43.5379607532746, 142.117055612421 43.5381526054745)) ^^http://www.opengis.net/ont/geosparql#wktLiteral