メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.928356910402 37.8284055868397, 140.925402732795 37.8287753518358, 140.925402519626 37.8283154219426, 140.925431584282 37.8275241032835, 140.925426167852 37.8273553563758, 140.925453341539 37.8264176406801, 140.925467964986 37.8261274965959, 140.927852713336 37.8258504415079, 140.928119919711 37.8272978679345, 140.928167195992 37.8275124024079, 140.928187351754 37.8275972463281, 140.928296514773 37.8281561199597, 140.928356910402 37.8284055868397)) ^^http://www.opengis.net/ont/geosparql#wktLiteral