Hwang, J. D., C. Bhagavatula, R. Le Bras, J. Da, K. Sakaguchi, A. Bosselut, and Y. Choi. “(Comet-) Atomic 2020: On Symbolic and Neural Commonsense Knowledge Graphs”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 35, no. 7, May 2021, pp. 6384-92, doi:10.1609/aaai.v35i7.16792.