@inproceedings{riedel11model,
    month={June}, 
    year={2011}, 
    author={Sebastian Riedel and David McClosky and Mihai Surdeanu and Christopher D. Manning and Andrew McCallum}, 
    bdsk-url-1={/publications/papers/riedel11model.pdf}, 
    booktitle={Proceedings of the Natural Language Processing in Biomedicine NAACL 2011 Workshop (BioNLP)}, 
    title={Model Combination for Event Extraction in BioNLP}, 
}