メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.486400578759 39.3239643931335, 140.486087071128 39.3242643766946, 140.485991812471 39.3244035737489, 140.485740862667 39.3243651746574, 140.485021360626 39.3242951140944, 140.485062139559 39.324211701773, 140.485047802739 39.3240925165294, 140.484973443154 39.3238353585869, 140.486400578759 39.3239643931335)) ^^http://www.opengis.net/ont/geosparql#wktLiteral