@inproceedings{unitorhmmtkstructuredkernelbased,
  title = {UNITOR-HMM-TK: Structured Kernel-based learning for Spatial Role Labeling},
  author = {Emanuele Bastianelli and Danilo Croce and Roberto Basili and Daniele Nardi},
  year = {2013},
  booktitle = {SEMEVAL 2013 6},
  url = {https://aclanthology.org/S13-2096},
}