メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.056233577517 34.8597921356722, 137.055933068334 34.8599494809706, 137.055730011861 34.8597050503639, 137.055900129261 34.8596159029078, 137.055841102472 34.8595262644239, 137.055987536693 34.8594489966089, 137.056053481035 34.859541036552, 137.056233577517 34.8597921356722)) ^^http://www.opengis.net/ont/geosparql#wktLiteral