@conference {bastianelli2013unitor,
	title = {UNITOR-HMM-TK: Structured Kernel-based learning for Spatial Role Labeling},
	booktitle = {Proceedings of the Seventh International Workshop on Semantic Evaluation (SemEval 2013). Association for Computational Linguistics},
	year = {2013},
	author = {Emanuele Bastianelli and Danilo Croce and Basili, Roberto and D. Nardi}
}
