メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.361222602756 43.7760762492563, 142.361549885836 43.776175580147, 142.361543029608 43.7761865743255, 142.362174554693 43.77637530605, 142.361106810768 43.7781779035812, 142.360228019657 43.7783381079094, 142.359704816605 43.7784438054728, 142.359437299814 43.7783997706728, 142.359751541441 43.7778928501223, 142.360692977664 43.7763740883896, 142.36094281413 43.7759844312833, 142.361222602756 43.7760762492563)) ^^http://www.opengis.net/ont/geosparql#wktLiteral