%0 Conference Proceedings %T Course Concept Expansion in MOOCs with External Knowledge and Interactive Game %A Yu, Jifan %A Wang, Chenyu %A Luo, Gan %A Hou, Lei %A Li, Juanzi %A Liu, Zhiyuan %A Tang, Jie %Y Korhonen, Anna %Y Traum, David %Y Màrquez, Lluís %S Proceedings of the 57th Annual Meeting of the Association for Computational Linguistics %D 2019 %8 July %I Association for Computational Linguistics %C Florence, Italy %F yu-etal-2019-course %R 10.18653/v1/P19-1421 %U https://aclanthology.org/P19-1421/ %U https://doi.org/10.18653/v1/P19-1421 %P 4292-4302