メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.693869297064 35.4303603890278, 136.69618546146 35.4303815249309, 136.696150693514 35.4312560406449, 136.693900125667 35.4312319889075, 136.693848721137 35.4312314004982, 136.693237763936 35.4312245754804, 136.693249352299 35.4293021988746, 136.6939107151 35.4293234439241, 136.693869297064 35.4303603890278)) ^^http://www.opengis.net/ont/geosparql#wktLiteral