メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.503652007175 34.6885186804085, 135.503657581161 34.6889211372038, 135.502678339015 34.688934750859, 135.501707877186 34.6889133189775, 135.500770883679 34.6888915937346, 135.500756550452 34.6884805101629, 135.500746434732 34.6881269141478, 135.501698873494 34.6881308122717, 135.502668105443 34.6881212499713, 135.503645964175 34.6881163632127, 135.503652007175 34.6885186804085)) ^^http://www.opengis.net/ont/geosparql#wktLiteral