メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.152452545927 36.7626040056922, 137.151977355903 36.7627751746594, 137.151747279983 36.7624002363224, 137.151126765341 36.7613447026974, 137.151416790715 36.7612401172696, 137.151667124913 36.7611581262103, 137.151665067576 36.7611515778823, 137.152043004154 36.7610639696119, 137.152972442592 36.7608550468467, 137.153994293689 36.7606477450581, 137.15410213273 36.7606254375324, 137.155217600521 36.7604033498523, 137.155347967294 36.7609546392936, 137.155504583365 36.7615553563285, 137.154250656636 36.7619850600591, 137.152452545927 36.7626040056922)) ^^http://www.opengis.net/ont/geosparql#wktLiteral