メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.371594892489 43.772160094217, 142.371800102876 43.7725137201071, 142.371893311598 43.772692063562, 142.371958132253 43.7728031745076, 142.371304535432 43.7730086374712, 142.370281367871 43.7732795659345, 142.370178014599 43.7731035527327, 142.369919092406 43.7726561004061, 142.369666927463 43.7722068306417, 142.37133451568 43.7717227012726, 142.371594892489 43.772160094217)) ^^http://www.opengis.net/ont/geosparql#wktLiteral