メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.856596883009 37.4602981294253, 138.857055919933 37.4613752363223, 138.85634980524 37.4615767524937, 138.856453819736 37.4618186112556, 138.855842146344 37.4620429272423, 138.85553537157 37.4613605602944, 138.855518421943 37.4613013352744, 138.855208258724 37.4606309560165, 138.855029378122 37.4606750037859, 138.854833516276 37.4602430688971, 138.854558084082 37.4595804677239, 138.854890735468 37.4594723149682, 138.855372220403 37.4593342864023, 138.855900108417 37.4591872447617, 138.856076033312 37.4591305350798, 138.856596883009 37.4602981294253)) ^^http://www.opengis.net/ont/geosparql#wktLiteral