メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.307210674024 43.0611298208303, 141.306643898543 43.061418703139, 141.306053807666 43.0617265197467, 141.305794975516 43.0614988394272, 141.305586962178 43.0613159555984, 141.305565570329 43.0612974228652, 141.305414595332 43.061166560889, 141.305184998205 43.0609590934666, 141.306438151763 43.0603250796254, 141.307264939316 43.0599109752472, 141.308098635877 43.0594896075238, 141.30812528096 43.059509589154, 141.308360353003 43.0597042956779, 141.308511217607 43.0598174295394, 141.308945455734 43.0602408659073, 141.308600004356 43.0604271388049, 141.307990112372 43.0607326924689, 141.307746772773 43.0608520770525, 141.30761952715 43.0609188961122, 141.307502932967 43.0609790520772, 141.307210674024 43.0611298208303)) ^^http://www.opengis.net/ont/geosparql#wktLiteral