メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.474676895181 35.5838072255562, 138.477137913311 35.5836412401149, 138.47754294726 35.5874611299805, 138.476909175363 35.58755767103, 138.476383428418 35.5876714097314, 138.475664571807 35.5877384585365, 138.474890290539 35.587795211728, 138.474434299641 35.5878404028071, 138.47411958899 35.5878374191352, 138.473860318143 35.58779501134, 138.473701197007 35.5877234695916, 138.473520605908 35.5876694222205, 138.47341689421 35.5876606346597, 138.473075349268 35.5876912318375, 138.472871502196 35.5876911897916, 138.472694479932 35.5876692527281, 138.471526836456 35.5876441847942, 138.471410803969 35.5870675737783, 138.47003391399 35.5871519560756, 138.469307918012 35.5871897491068, 138.468447797834 35.5872581392119, 138.467961400407 35.5873135149691, 138.466394925098 35.5874897422678, 138.466355368033 35.5867142816625, 138.466547258775 35.5866860910169, 138.466567894179 35.5863818494952, 138.466964516008 35.5863612451195, 138.466882644365 35.5854534782331, 138.467733593882 35.5854011529521, 138.468982612214 35.5853119433045, 138.468876958588 35.5841979147263, 138.469773920908 35.5841419240331, 138.474676895181 35.5838072255562)) ^^http://www.opengis.net/ont/geosparql#wktLiteral