メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.62631144431 34.6084153625037, 135.626124632859 34.6093304073241, 135.626059118303 34.6095795357983, 135.626052907735 34.6099587221671, 135.62598557913 34.610365753972, 135.625911011189 34.6106579593749, 135.625064111844 34.6096286138093, 135.625131156139 34.6095041548696, 135.6253360894 34.6090148573875, 135.62557475169 34.60851622531, 135.62631144431 34.6084153625037)) ^^http://www.opengis.net/ont/geosparql#wktLiteral