"Extending LargeRDFBench for Multi-Source Data at Scale for SPARQL Endpoint Federation" as presented in SSWS 2018 co-located with the 17th International Semantic Web Conference ISWC, 8th - 12th of October 2018, held in Monterey, California, USA This work was supported by grants from the EU H2020 Framework Programme provided for the project HOBBIT (GA no. 688227).