A Crowdsourcing Approach for Annotating Causal Relation Instances in Wikipedia Kazuaki Hanawa author Akira Sasaki author Naoaki Okazaki author Kentaro Inui author 2017-11 text Proceedings of the 31st Pacific Asia Conference on Language, Information and Computation Rachel Edita Roxas editor The National University (Phillippines) conference publication hanawa-etal-2017-crowdsourcing https://aclanthology.org/Y17-1045/ 2017-11 336 345