1. Afonso, S., Bick, E., Haber, R., Santos, D.: Floresta sintá(c)tica: a treebank for Portuguese. In: The Third International Conference on Language Resources and Evaluation, LREC 2002, pp. 1698–1703, Las Palmas de Gran Canaria, Spain (2002)
2. Banko, M., Cafarella, M.J., Soderland, S., Broadhead, M., Etzioni, O.: Open information extraction from the web. In: International Joint Conference on Artificial Intelligence, pp. 2670–2676 (2007)
3. Lecture Notes in Computer Science (Lecture Notes in Artificial Intelligence);S Collovini,2016
4. Del Corro, L., Gemulla, R.: ClausIE: clause-based open information extraction. In: Proceedings of the World Wide Web Conference (WWW-2013), pp. 355–366, Rio de Janeiro, Brazil (2013)
5. Etzioni, O., Fader, A., Christensen, J., Soderland, S., Mausam, M.: Open information extraction: the second generation. In: International Joint Conference on Artificial Intelligence, pp. 3–10. AAAI Press (2011)