Towards assessing depth of argumentation Manfred Stede author 2016-12 text Proceedings of COLING 2016, the 26th International Conference on Computational Linguistics: Technical Papers Yuji Matsumoto editor Rashmi Prasad editor The COLING 2016 Organizing Committee Osaka, Japan conference publication stede-2016-towards https://aclanthology.org/C16-1312/ 2016-12 3308 3317