Before revision:  In this paper, we propose to learn a multi-hop knowledge path generatorto generate structured evidence dynamically according to the questions.
After revision:  In this paper, we augment a general commonsense QA framework with a knowledgeable path generator. By extrapolating over existing paths in a KG with a state-of-the-art language model, our generator learns to connect a pair of entities in text with a dynamic, and potentially novel, multi-hop knowledge path generatorto generate structured evidence dynamically according to the questions.