メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.921841287345 35.2849340298815, 136.921611202739 35.2848601101235, 136.921357959428 35.2847760026997, 136.921152533197 35.2847274856387, 136.920535985524 35.2846578469962, 136.920658196443 35.2840598464504, 136.920881374322 35.282928099346, 136.920850239252 35.2826883129275, 136.92158759468 35.2830410177981, 136.922029804499 35.2832458629519, 136.921892454811 35.2844016601168, 136.921841287345 35.2849340298815)) ^^http://www.opengis.net/ont/geosparql#wktLiteral