メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.466520654525 43.4637679741763, 142.467384064772 43.4638378305933, 142.467162709843 43.4655283025036, 142.466937091427 43.4667599002904, 142.466968069174 43.4667622686972, 142.466907289518 43.4672872656685, 142.466832868264 43.4672874060938, 142.466787753535 43.4678124084838, 142.467814628972 43.4680129715919, 142.468081142538 43.4680638404085, 142.467967549263 43.468601772892, 142.467614392523 43.470253220724, 142.46754274833 43.470254657083, 142.467483075956 43.4702547699857, 142.467387942903 43.470161836814, 142.467319049476 43.4699470133242, 142.465878119053 43.4683131574523, 142.465964966446 43.4676967224677, 142.465784747909 43.4675958960662, 142.465389677593 43.4672409608699, 142.465018346719 43.4669146731629, 142.464947004547 43.4667886059538, 142.464771067878 43.4660374605518, 142.464596988068 43.465808310191, 142.464518001944 43.4657453748815, 142.464713492828 43.4656413838239, 142.465078941076 43.4654839071354, 142.465376476483 43.4654049361069, 142.465637769972 43.4637121429213, 142.466520654525 43.4637679741763)) ^^http://www.opengis.net/ont/geosparql#wktLiteral