An Exploration of Prompt-Based Zero-Shot Relation Extraction Method Zhao Jun author Hu Yuan author Xu Nuo author Gui Tao author Zhang Qi author Chen Yunwen author Gao Xiang author 2022-10 text eng Proceedings of the 21st Chinese National Conference on Computational Linguistics Maosong Sun editor Yang Liu editor Wanxiang Che editor Yang Feng editor Xipeng Qiu editor Gaoqi Rao editor Yubo Chen editor Chinese Information Processing Society of China Nanchang, China conference publication jun-etal-2022-exploration https://aclanthology.org/2022.ccl-1.70/ 2022-10 786 797