Post-editing and MQM annotations produced by the QT21 project. As described in

@InProceedings{specia-etal_MTSummit:2017, author = {Specia, Lucia and Kim Harris and Frédéric Blain and Aljoscha Burchardt and Viviven Macketanz and Inguna Skadiņa and Matteo Negri and and Marco Turchi}, title = {Translation Quality and Productivity: A Study on Rich Morphology Languages}, booktitle = {Proceedings of Machine Translation Summit XVI}, year = {2017}, pages = {55--71}, address = {Nagoya, Japan}, }