メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.88167832909 43.8112712195799, 143.882376053499 43.8113180668765, 143.883201371903 43.8113861672204, 143.883099869499 43.8122361133792, 143.882137223249 43.8127376822416, 143.88097776388 43.8133371437891, 143.880536860239 43.8128725966084, 143.880142553883 43.8124572935801, 143.879632574593 43.8119447333909, 143.879503652776 43.8118176592614, 143.879540134831 43.8115454237546, 143.879595213544 43.8111358173931, 143.880124762785 43.8111690627319, 143.880656889883 43.8112042022079, 143.88167832909 43.8112712195799)) ^^http://www.opengis.net/ont/geosparql#wktLiteral