メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.175898098086 34.6602351506804, 135.175665175214 34.6601285865597, 135.175522071362 34.6600033711024, 135.175847472024 34.6592799429198, 135.176348975543 34.659513106095, 135.176222969901 34.6597280779777, 135.175898098086 34.6602351506804)) ^^http://www.opengis.net/ont/geosparql#wktLiteral