メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.359050028958 43.7568078023139, 142.358526735787 43.7571655332502, 142.357605173378 43.7578999518591, 142.357134940858 43.7575788734147, 142.356655956504 43.7572357548992, 142.357072811068 43.756891789592, 142.356543778007 43.7565124678799, 142.357066103351 43.7561053251263, 142.357449441826 43.7558095955192, 142.358080496802 43.7553509564305, 142.358441202058 43.7556074409022, 142.358641904286 43.7557420719214, 142.359175620319 43.7561000592429, 142.359588300985 43.7563768700764, 142.359122469333 43.7567582973291, 142.359050028958 43.7568078023139)) ^^http://www.opengis.net/ont/geosparql#wktLiteral