Generating and authoring high-variability exercises from authentic texts Tanja Heck author Detmar Meurers author 2022-12 text Proceedings of the 11th Workshop on NLP for Computer Assisted Language Learning David Alfter editor Elena Volodina editor Thomas François editor Piet Desmet editor Frederik Cornillie editor Arne Jönsson editor Evelina Rennes editor LiU Electronic Press Louvain-la-Neuve, Belgium conference publication heck-meurers-2022-generating https://aclanthology.org/2022.nlp4call-1.7/ 2022-12 61 71