メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.887557113285 35.2519790122101, 136.887244623251 35.2520158914655, 136.886737147064 35.2520530897777, 136.886291718334 35.2515012031212, 136.885328194874 35.2517544441296, 136.885198749784 35.2509159693383, 136.88665165151 35.2507529547578, 136.88732527048 35.2506379737372, 136.887399819352 35.2510203317719, 136.887557113285 35.2519790122101)) ^^http://www.opengis.net/ont/geosparql#wktLiteral