メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.348556175553 43.0531186301869, 141.349092260451 43.053184674148, 141.34903052812 43.0534139442164, 141.348930805216 43.0537843001225, 141.348788861827 43.0543544694246, 141.347226149786 43.0541359411259, 141.347378066565 43.0535733064171, 141.347522015888 43.0529912673199, 141.348090453339 43.0530612980916, 141.348320968691 43.0530896996754, 141.348347965477 43.053093006521, 141.348556175553 43.0531186301869)) ^^http://www.opengis.net/ont/geosparql#wktLiteral