PaCo: Preconditions Attributed to Commonsense Knowledge. (arXiv:2104.08712v2 [cs.CL] UPDATED)

Humans can seamlessly reason with circumstantial preconditions of commonsense
knowledge. We understand that a glass is used for drinking water, unless the
glass is broken or the water is toxic. Despite state-of-the-art (SOTA) language
models' (LMs) impressive performance on inferring commonsense knowledge, it is
unclear whether they understand the circumstantial preconditions. To address
this gap, we propose a novel challenge of reasoning with circumstantial
preconditions. We collect a dataset, called PaCo, consisting of 12.4 thousand
preconditions of commonsense statements expressed …

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