@inproceedings{arase-etal-2022-cefr,
    title = "{CEFR}-Based Sentence Difficulty Annotation and Assessment",
    author = "Arase, Yuki  and
      Uchida, Satoru  and
      Kajiwara, Tomoyuki",
    editor = "Goldberg, Yoav  and
      Kozareva, Zornitsa  and
      Zhang, Yue",
    booktitle = "Proceedings of the 2022 Conference on Empirical Methods in Natural Language Processing",
    month = dec,
    year = "2022",
    address = "Abu Dhabi, United Arab Emirates",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/2022.emnlp-main.416/",
    doi = "10.18653/v1/2022.emnlp-main.416",
    pages = "6206--6219"
}