KLEJ: Comprehensive Benchmark for Polish Language Understanding Piotr Rybak author Robert Mroczkowski author Janusz Tracz author Ireneusz Gawlik author 2020-07 text Proceedings of the 58th Annual Meeting of the Association for Computational Linguistics Dan Jurafsky editor Joyce Chai editor Natalie Schluter editor Joel Tetreault editor Association for Computational Linguistics Online conference publication rybak-etal-2020-klej 10.18653/v1/2020.acl-main.111 https://aclanthology.org/2020.acl-main.111/ 2020-07 1191 1201