メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.855866199101 35.3988339824228, 136.855425305691 35.3988014298293, 136.854386397452 35.3987276012932, 136.854450141508 35.3982654462892, 136.854568307034 35.3974940691219, 136.854991412115 35.3975266495332, 136.85529768692 35.3975463899127, 136.856027215358 35.3975934947017, 136.855866199101 35.3988339824228)) ^^http://www.opengis.net/ont/geosparql#wktLiteral