メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.748504120238 42.905474411687, 140.748554789637 42.9062960535874, 140.748579364648 42.9066829865729, 140.747498828571 42.906748695222, 140.746274441077 42.9068084941832, 140.746268633742 42.9065986900518, 140.746380244901 42.906482281444, 140.746433833837 42.906403089608, 140.746275214277 42.9060523736834, 140.746239777061 42.9060539469744, 140.746213001486 42.9060415687614, 140.746123570323 42.905190440611, 140.746705710312 42.9051680605169, 140.747309859075 42.9051300016868, 140.748468931806 42.9050753832141, 140.748504120238 42.905474411687)) ^^http://www.opengis.net/ont/geosparql#wktLiteral