Crowdsourcing and Aggregating Nested Markable Annotations Chris Madge author Juntao Yu author Jon Chamberlain author Udo Kruschwitz author Silviu Paun author Massimo Poesio author 2019-07 text Proceedings of the 57th Annual Meeting of the Association for Computational Linguistics Anna Korhonen editor David Traum editor Lluís Màrquez editor Association for Computational Linguistics Florence, Italy conference publication madge-etal-2019-crowdsourcing 10.18653/v1/P19-1077 https://aclanthology.org/P19-1077/ 2019-07 797 807