メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((130.55723009558 31.5895739815226, 130.557855683254 31.5897981408362, 130.557468385736 31.5907506064215, 130.557418380763 31.5908799472097, 130.55716253554 31.5915036576878, 130.556465344698 31.5912309048426, 130.555750107786 31.5909366617767, 130.555869421012 31.5907397773909, 130.556149255318 31.5903181077225, 130.556192799618 31.5902494862536, 130.556619925547 31.5893631192041, 130.55723009558 31.5895739815226)) ^^http://www.opengis.net/ont/geosparql#wktLiteral