メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.461397570007 43.0459117793242, 141.462287367341 43.0462504395739, 141.462062085623 43.046684027285, 141.461593635236 43.0475056447705, 141.461429872006 43.0477884436861, 141.461287289041 43.0480347450353, 141.460030941202 43.0476083748932, 141.459306208356 43.0473336442574, 141.459185759871 43.0473006699614, 141.459073548877 43.04612627277, 141.45902683668 43.045250042206, 141.459657885216 43.0452724108973, 141.459823434658 43.0453324922125, 141.46077230465 43.0456882417696, 141.461397570007 43.0459117793242)) ^^http://www.opengis.net/ont/geosparql#wktLiteral