Exploring German Multi-Level Text Simplification Nicolas Spring author Annette Rios author Sarah Ebling author 2021-09 text Proceedings of the International Conference on Recent Advances in Natural Language Processing (RANLP 2021) Ruslan Mitkov editor Galia Angelova editor INCOMA Ltd. Held Online conference publication spring-etal-2021-exploring https://aclanthology.org/2021.ranlp-1.150/ 2021-09 1339 1349