@inproceedings{acrowdsourcingapproachforannotating,
  title = {A Crowdsourcing Approach for Annotating Causal Relation Instances in Wikipedia},
  author = {Kazuaki Hanawa and Akira Sasaki and Naoaki Okazaki and Kentaro Inui},
  year = {2017},
  booktitle = {PACLIC 2017 11},
  url = {https://aclanthology.org/Y17-1045},
}