メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.395924624942 34.8328234580562, 137.396694314861 34.833366017731, 137.396643500821 34.8334309796902, 137.396240185359 34.8339827859614, 137.395469386871 34.8334340278165, 137.394746527944 34.8329298275263, 137.394896267207 34.8325090065107, 137.395014453964 34.8322091036316, 137.395924624942 34.8328234580562)) ^^http://www.opengis.net/ont/geosparql#wktLiteral