メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.390154937014 34.7638590455871, 137.390161003452 34.7639325588453, 137.390192236856 34.7643118161893, 137.390156781541 34.7643139929348, 137.389086455095 34.7643864790575, 137.388813456235 34.764399784948, 137.387371881717 34.7645032028368, 137.387355850128 34.7643073050857, 137.387336531431 34.7640715525267, 137.387303899632 34.7636670816238, 137.390132533982 34.763463291954, 137.390151128471 34.7637915842184, 137.390154937014 34.7638590455871)) ^^http://www.opengis.net/ont/geosparql#wktLiteral