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We present a new version of the data model stRDF and the query language stSPARQL for the representation and querying of geospatial data. The new versions of stRDF and stSPARQL use OGC standards to represent geometries where the original version of stSPARQL used linear constraints. In this sense stSPARQL is a subset of the recent standard GeoSPARQL proposed by OGC. We discuss the implementation of the system Strabon which is a storage and query evaluation module for stRDF/stSPARQL and the corresponding subset of GeoSPARQL. We study the performance of Strabon experimentally and show that it scales to very large data volumes.
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