FOX is a framework that integrates the Linked Data Cloud and makes uses of the diversity of NLP algorithms to extract RDF triples of high accuracy out of NL. In its current version, it integrates and merges the results of Named Entity Recognition, Keyword Extraction and Relation Extraction tools.
F. Suchanek, M. Sozio, и G. Weikum. WWW '09: Proceedings of the 18th international conference on World wide web, стр. 631--640. New York, NY, USA, ACM, (2009)