Discourse analysis has been shown to be useful for many NLP tasks, such as question answering (Chai and Jin 2004;Lioma, Larsen, and Lu 2012;Jansen, Surdeanu, and Clark 2014), summarization (Louis, Joshi, and Nenkova 2010), and information extraction (Kitani, Eriguchi, and Hara 1994).
2016) using existing IE techniques.