@inproceedings{zhang2018graph,
 author = {Zhang, Yuhao and Qi, Peng and Manning, Christopher D.},
 booktitle = {Empirical Methods in Natural Language Processing (EMNLP)},
 title = {Graph Convolution over Pruned Dependency Trees Improves Relation Extraction},
 url = {https://nlp.stanford.edu/pubs/zhang2018graph.pdf},
 year = {2018}
}