メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.412098266858 43.7686979569411, 142.41281762669 43.7686504474621, 142.412818725159 43.7686615399103, 142.412914520373 43.7696278432427, 142.412930361597 43.769787716948, 142.412196418236 43.7698207971697, 142.410662224556 43.7698998505895, 142.409786817328 43.769949126553, 142.410226003758 43.7703456661322, 142.409665886757 43.7706891749005, 142.408993671801 43.7707270704637, 142.408916625176 43.7700814227474, 142.40880172645 43.7690255129097, 142.408801275983 43.7688562838346, 142.409491028407 43.7688211244264, 142.409967604695 43.7688071940488, 142.412098266858 43.7686979569411)) ^^http://www.opengis.net/ont/geosparql#wktLiteral