メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.358377543353 43.1195528559505, 141.359736534289 43.1196897305112, 141.35965754595 43.120066285902, 141.359586514076 43.1203970479211, 141.358426513044 43.1202614386007, 141.358432442837 43.1203557246459, 141.35728714615 43.1202229261521, 141.356769520536 43.1201623647498, 141.356832273078 43.1198934961893, 141.35689114326 43.119640702772, 141.356977243826 43.1192777060524, 141.358373047407 43.1195054193083, 141.358377543353 43.1195528559505)) ^^http://www.opengis.net/ont/geosparql#wktLiteral