@inproceedings{corporaannotatedwithnegationanoverview,
  title = {Corpora Annotated with Negation: An Overview},
  author = {Salud Mar{\'\i}a Jim{\'e}nez-Zafra and Roser Morante and Mar{\'\i}a Teresa Mart{\'\i}n-Valdivia and L. Alfonso Ure{\~n}a-L{\'o}pez},
  year = {2020},
  booktitle = {CL 2020 3},
  url = {https://aclanthology.org/2020.cl-1.5},
}