メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.394534553617 44.1788163003065, 142.393216580612 44.178600496634, 142.393519789335 44.1776600943533, 142.394831926472 44.1778645813199, 142.394534553617 44.1788163003065)) ^^http://www.opengis.net/ont/geosparql#wktLiteral