メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.217939788506 36.6919551202387, 137.218516144122 36.6920072502192, 137.21899488992 36.6920519587185, 137.219315638278 36.6920746997403, 137.219387652589 36.6920798063275, 137.219322777968 36.6923643428268, 137.219281047025 36.6925103100254, 137.219206787128 36.692656293394, 137.219095386896 36.6928660086589, 137.219044347234 36.6929932532166, 137.218716640235 36.6929503800679, 137.218423800715 36.6929130511587, 137.217824184243 36.6928459347264, 137.217875107007 36.6925352854559, 137.217363811607 36.6924868553437, 137.217447094613 36.6919178771325, 137.217605736291 36.691929847138, 137.217939788506 36.6919551202387)) ^^http://www.opengis.net/ont/geosparql#wktLiteral