@article{spanbasedopeninformationextraction,
  title = {Span Model for Open Information Extraction on Accurate Corpus},
  author = {Junlang Zhan and Hai Zhao},
  year = {2019},
  eprint = {1901.10879},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1901.10879v6},
}