P. Xia, S. Wu, and B. Van Durme. Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing (EMNLP), page 7516--7533. Association for Computational Linguistics, (November 2020)
T. Zesch, and I. Gurevych. Proceedings of the TextGraphs-2 Workshop (NAACL-HLT), page 1--8. Rochester, Association for Computational Linguistics, (April 2007)