メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.388156810338 43.7858057426745, 142.388569394595 43.7860476330899, 142.388375080008 43.7862141254774, 142.387258440364 43.7871708561021, 142.386890503948 43.7874860908115, 142.386593668592 43.7877378264576, 142.385949616271 43.7872077561013, 142.385512026595 43.7868626336844, 142.385514914118 43.786766113202, 142.38539702897 43.786696684774, 142.38404339836 43.7858578528849, 142.384529085702 43.7854988044915, 142.384910886698 43.7851669837152, 142.385168461636 43.7849451508018, 142.385825967101 43.7843871650743, 142.386756133342 43.7835932566451, 142.387107226494 43.7840439759213, 142.387431847231 43.7844352506686, 142.38787462787 43.7848778187233, 142.387948823357 43.7849519789278, 142.388383405591 43.7853285287935, 142.388627105077 43.7855200897837, 142.388628583752 43.7855212518741, 142.388156810338 43.7858057426745)) ^^http://www.opengis.net/ont/geosparql#wktLiteral