region:us
The dataset contains question-answer pairs to model discourse relations. 
While answers roughly correspond to spans of the sentence, these spans could have been freely adjusted by annotators to grammaticaly fit the question;
Therefore, answers are given just as text and not as identified spans of the original sentence.    
See the paper for details: QADiscourse - Discourse Relations as QA Pairs: Representation, Crowdsourcing and Baselines, Pyatkin et. al., 2020
@inproceedings{pyatkin2020qadiscourse,
  title={QADiscourse-Discourse Relations as QA Pairs: Representation, Crowdsourcing and Baselines},
  author={Pyatkin, Valentina and Klein, Ayal and Tsarfaty, Reut and Dagan, Ido},
  booktitle={Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing (EMNLP)},
  pages={2804--2819},
  year={2020}
}
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