メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.731967476084 35.4134814744315, 136.73319211726 35.4137378104997, 136.733078318073 35.4140749970024, 136.732483019311 35.4139801472446, 136.732460438358 35.4140606981839, 136.732360912143 35.4140291069239, 136.73230725052 35.4139301492296, 136.73216410703 35.4139961456827, 136.731970634887 35.4139592877428, 136.731877038391 35.4140009214012, 136.731829621915 35.413932441912, 136.730479572572 35.4136433852997, 136.730619799027 35.4132085528085, 136.731967476084 35.4134814744315)) ^^http://www.opengis.net/ont/geosparql#wktLiteral