メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.990379621524 43.5495321854312, 144.989941955556 43.5498754326397, 144.98956795427 43.5496314672384, 144.989507180274 43.5495917886045, 144.989504389604 43.549589958172, 144.989038470634 43.5492633551241, 144.989323860468 43.5491181949386, 144.989425331896 43.5490405201048, 144.989462936793 43.5490638780026, 144.9895597061 43.548989163673, 144.989914626577 43.5492217381686, 144.990263419041 43.5494598725699, 144.990344006679 43.5495100455968, 144.990379621524 43.5495321854312)) ^^http://www.opengis.net/ont/geosparql#wktLiteral