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@ARTICLE{Rospocher2015,  AUTHOR="Marco Rospocher, @article{Rospocher2016,  title = "Building event-centric knowledge graphs from news ",  journal = "Web Semantics: Science, Services and Agents on the World Wide Web ",  year = "2016",  issn = "1570-8268",  doi = "http://dx.doi.org/10.1016/j.websem.2015.12.004",  url = "http://www.sciencedirect.com/science/article/pii/S1570826815001456",  author = "Marco Rospocher and  Marieke van Erp, Erp and  Piek Vossen, Vossen and  Antske Fokkens, Fokkens and  Itziar Aldabe, Aldabe and  German Rigau, Rigau and  Aitor Soroa, Soroa and  Thomas Ploeger, Ploeger and  Tessel Bogaard", TITLE="Building event-centric knowledge graphs }  @article{Hogenboom2016,  title = "A Survey of event extraction methods  from news",  JOURNAL="Journal text for decision support systems",  journal = "Decision Support Systems",  year = "2016",  issn = "0167-9236",  doi = "http://dx.doi.org/10.1016/j.dss.2016.02.006",  url = "http://www.sciencedirect.com/science/article/pii/S0167923616300173",  author = "Frederik Hogenboom and Flavius Frasincar and Uzay Kaymak and Franciska de Jong and Emiel Caron",  }  @INPROCEEDINGS{Deng2015,  author = "J. Deng and F. Qiao and H. Li and X. Zhang and H. Wang",  booktitle = "Cyber-Enabled Distributed Computing and Knowledge Discovery (CyberC), 2015 International Conference on",  title = "An Overview  of Web Semantics",  YEAR=2016 Event Extraction from Twitter",  year = 2015,  pages = "251-256",  doi = "10.1109/CyberC.2015.24",  month = "Sept",  }