Marco Pennacchiotti Diego De Cao Roberto Basili Danilo Croce Michael Roth Automatic induction of FrameNet lexical units. 457-465 2008 EMNLP http://www.aclweb.org/anthology/D08-1048 conf/emnlp/2008 db/conf/emnlp/emnlp2008.html#PennacchiottiCBCR08