Challenge or Empower: Revisiting Argumentation Quality in a News Editorial Corpus Roxanne El Baff author Henning Wachsmuth author Khalid Al-Khatib author Benno Stein author 2018-10 text Proceedings of the 22nd Conference on Computational Natural Language Learning Anna Korhonen editor Ivan Titov editor Association for Computational Linguistics Brussels, Belgium conference publication el-baff-etal-2018-challenge 10.18653/v1/K18-1044 https://aclanthology.org/K18-1044/ 2018-10 454 464