メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.038844072107 42.9123361094863, 143.039642790479 42.9123921548535, 143.039665346612 42.9123939693438, 143.039524871279 42.9136442453335, 143.039355382562 42.913630852805, 143.038786438543 42.9135859554264, 143.038783949784 42.9135857618797, 143.038033630457 42.9135443583269, 143.038212635081 42.9122930450759, 143.038844072107 42.9123361094863)) ^^http://www.opengis.net/ont/geosparql#wktLiteral