メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.156346198366 35.0689731154483, 137.1568752925 35.069044308994, 137.156742904434 35.0698013798216, 137.156686937434 35.0698327123933, 137.156573048074 35.0702508185277, 137.156568770505 35.0702664528569, 137.156357797435 35.0710377351827, 137.155513043874 35.0705882393318, 137.155709426758 35.0695117275646, 137.155817059637 35.0689120582713, 137.155954803293 35.0681047755433, 137.156488845627 35.0681663954719, 137.156346198366 35.0689731154483)) ^^http://www.opengis.net/ont/geosparql#wktLiteral