メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.186043337774 34.808651047845, 137.185926265895 34.8086872672306, 137.185822003028 34.8086730571359, 137.185544397751 34.8086094354369, 137.18529847775 34.8085305958743, 137.184533349483 34.808091248311, 137.184683554856 34.8077419065051, 137.18484741317 34.8073474888345, 137.186043337774 34.808651047845)) ^^http://www.opengis.net/ont/geosparql#wktLiteral