@article{coffeeacontrastiveoraclefreeframework,
  title = {COFFEE: A Contrastive Oracle-Free Framework for Event Extraction},
  author = {Meiru Zhang and Yixuan Su and Zaiqiao Meng and Zihao Fu and Nigel Collier},
  year = {2023},
  eprint = {2303.14452},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2303.14452v3},
}