メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.642256336889 35.0778002018518, 136.642165603473 35.0782910512109, 136.63906980045 35.0779895865343, 136.639173169398 35.0775290968945, 136.639228141658 35.0771906268952, 136.639291454138 35.076872464628, 136.639428916856 35.0765606024742, 136.64104666757 35.0767110051368, 136.642388649708 35.0768323544764, 136.642373695025 35.077028567124, 136.642256336889 35.0778002018518)) ^^http://www.opengis.net/ont/geosparql#wktLiteral