Proceedings of the Fourth Workshop on Structured Prediction for NLP Priyanka Agrawal editor Zornitsa Kozareva editor Julia Kreutzer editor Gerasimos Lampouras editor André Martins editor Sujith Ravi editor Andreas Vlachos editor 2020-11 Association for Computational Linguistics Online text conference publication spnlp-2020-structured 10.18653/v1/2020.spnlp-1.0 https://aclanthology.org/2020.spnlp-1.0/