@inproceedings{krishnan2006twostage,
 author = {Vijay Krishnan and Christopher D. Manning},
 booktitle = {},
 title = {21st International Conference on Computational Linguistics and 44th Annual Meeting of the Association for Computational Linguistics (ACL)},
 url = {https://nlp.stanford.edu/pubs/krishnan2006twostage.pdf},
 year = {2006}
}