@article{jimenez-zafra-etal-2020-corpora,
    title = "Corpora Annotated with Negation: An Overview",
    author = "Jim{\'e}nez-Zafra, Salud Mar{\'i}a  and
      Morante, Roser  and
      Mart{\'i}n-Valdivia, Mar{\'i}a Teresa  and
      Ure{\~n}a-L{\'o}pez, L. Alfonso",
    journal = "Computational Linguistics",
    volume = "46",
    number = "1",
    year = "2020",
    address = "Cambridge, MA",
    publisher = "MIT Press",
    url = "https://preview.aclanthology.org/fix-sig-urls/2020.cl-1.5/",
    doi = "10.1162/coli_a_00371",
    pages = "1--52"
}