Discovering Black Lives Matter Events in the United States: Shared Task 3, CASE 2021 Salvatore Giorgi author Vanni Zavarella author Hristo Tanev author Nicolas Stefanovitch author Sy Hwang author Hansi Hettiarachchi author Tharindu Ranasinghe author Vivek Kalyan author Paul Tan author Shaun Tan author Martin Andrews author Tiancheng Hu author Niklas Stoehr author Francesco Ignazio Re author Daniel Vegh author Dennis Atzenhofer author Brenda Curtis author Ali Hürriyetoğlu author 2021-08 text Proceedings of the 4th Workshop on Challenges and Applications of Automated Extraction of Socio-political Events from Text (CASE 2021) Ali Hürriyetoğlu editor Association for Computational Linguistics Online conference publication giorgi-etal-2021-discovering 10.18653/v1/2021.case-1.27 https://aclanthology.org/2021.case-1.27/ 2021-08 218 227