@misc{zhang2023coffee,
  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},
  primaryClass={cs.CL},
  url={https://arxiv.org/abs/2303.14452}
}