メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.995715540414 34.8786906279437, 136.996032159805 34.8790983688076, 136.994812538624 34.8797147974104, 136.994499489557 34.8792769133214, 136.993759550997 34.8782299076603, 136.993560782425 34.8779564259676, 136.993253763232 34.8775314347711, 136.994368146006 34.8769459300457, 136.994468539545 34.8770696076587, 136.995715540414 34.8786906279437)) ^^http://www.opengis.net/ont/geosparql#wktLiteral