Overview of VLSP RelEx shared task: A Data Challenge for Semantic Relation Extraction from Vietnamese News Vu Tran Mai author Hoang-Quynh Le author Duy-Cat Can author Thi Minh Huyen Nguyen author Tran Ngoc Linh Nguyen author Thanh Tam Doan author 2020-12 text Proceedings of the 7th International Workshop on Vietnamese Language and Speech Processing Huyen T M Nguyen editor Xuan-Son Vu editor Chi Mai Luong editor Association for Computational Lingustics Hanoi, Vietnam conference publication mai-etal-2020-overview https://aclanthology.org/2020.vlsp-1.17/ 2020-12 92 98