メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.706882493852 44.363398146368, 141.706339519313 44.3637504359928, 141.706276712774 44.3637906377304, 141.705180656999 44.362928999475, 141.705213446012 44.3629073934772, 141.706159207968 44.3622843493286, 141.706327589072 44.3621734569487, 141.706418684971 44.3622696606132, 141.707476242697 44.3630127296446, 141.706882493852 44.363398146368)) ^^http://www.opengis.net/ont/geosparql#wktLiteral