メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.212217543528 36.6972122404639, 137.213124748633 36.6975778616477, 137.213137600106 36.6979698067229, 137.213083828627 36.6987872453039, 137.213062510843 36.6990258608279, 137.213032414632 36.6993386179078, 137.212278481009 36.6992868078876, 137.212080321848 36.6988938054083, 137.212009866542 36.6987541462371, 137.211829245095 36.6983959174927, 137.21155077941 36.6978450937352, 137.211400047175 36.6975402220267, 137.211285281993 36.6973182723207, 137.211521895891 36.6970701421671, 137.211830618942 36.6972760344438, 137.211984821368 36.6971222795856, 137.212217543528 36.6972122404639)) ^^http://www.opengis.net/ont/geosparql#wktLiteral