メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.27754714156 42.4874754691603, 143.278218099618 42.4883893124884, 143.278503689691 42.4887965315229, 143.277633550141 42.4891378750133, 143.27638425106 42.4896208918422, 143.27611230009 42.4892392890296, 143.275761742504 42.4887692029285, 143.275298205436 42.4879854408913, 143.276442811307 42.4870231149316, 143.276941179788 42.4866182928853, 143.276975097172 42.4866644106373, 143.27754714156 42.4874754691603)) ^^http://www.opengis.net/ont/geosparql#wktLiteral