CONF Thayaparan_ACL-IJCNLP_2021/IDIAP Explainable Inference Over Grounding-Abstract Chains for Science Questions Thayaparan, Mokanarangan Valentino, Marco Freitas, Andre EXTERNAL http://publications.idiap.ch/attachments/papers/2021/Thayaparan_ACL-IJCNLP_2021.pdf PUBLIC 59th Annual Meeting of the Association for Computational Linguistics (ACL Findings) 2021