メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.818194797424 35.31163975101, 136.817878180553 35.312098427355, 136.81675640418 35.311531245092, 136.816645404573 35.3114751219614, 136.816518897036 35.3114111566066, 136.815680138738 35.3109870578841, 136.815390176661 35.310834736162, 136.815762090055 35.3103018631534, 136.815738801561 35.310288275261, 136.816192026877 35.3096993692318, 136.81696335083 35.3100806185934, 136.81774071828 35.3104917396448, 136.817255472658 35.3111774603758, 136.818194797424 35.31163975101)) ^^http://www.opengis.net/ont/geosparql#wktLiteral