@inproceedings{sciavolino-etal-2021-simple,
    title = "Simple Entity-Centric Questions Challenge Dense Retrievers",
    author = "Sciavolino, Christopher  and
      Zhong, Zexuan  and
      Lee, Jinhyuk  and
      Chen, Danqi",
    editor = "Moens, Marie-Francine  and
      Huang, Xuanjing  and
      Specia, Lucia  and
      Yih, Scott Wen-tau",
    booktitle = "Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing",
    month = nov,
    year = "2021",
    address = "Online and Punta Cana, Dominican Republic",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/Author-page-Marten-During-lu/2021.emnlp-main.496/",
    doi = "10.18653/v1/2021.emnlp-main.496",
    pages = "6138--6148"
}