メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.376225315541 34.8133932479973, 137.375972166535 34.8133002915124, 137.375894445932 34.8132728160985, 137.376390778124 34.8123283238647, 137.376338712058 34.8123054528202, 137.376382705299 34.8122336781799, 137.376432616314 34.8122489458922, 137.376467315946 34.8121659182352, 137.376550039022 34.8121963424402, 137.376664979654 34.8120058393628, 137.37672771646 34.8120268599337, 137.376927377612 34.8121017359395, 137.376225315541 34.8133932479973)) ^^http://www.opengis.net/ont/geosparql#wktLiteral