@article{reasoningovervirtualknowledgebaseswith,
  title = {Reasoning Over Virtual Knowledge Bases With Open Predicate Relations},
  author = {Haitian Sun and Pat Verga and Bhuwan Dhingra and Ruslan Salakhutdinov and William W. Cohen},
  year = {2021},
  eprint = {2102.07043},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2102.07043v2},
}