SemFrame (induction of semantic verb classes)
Limitation: omitted relations (Ide 2002, p. 18).
Query word classification: Mulder (Kwok, Etzioni, and Weld, 2001)
Class extraction: KnowItAll (Popescu, Yates, and Etzioni, 2004)
Semantic Web applications: "I can't say enough about the value of WordNet as a resource. Semantic transparency is always going to be an exceedingly hard problem, but it's a great help to have a project that provides such a computer-readable framework for analyzing relationships between words."
Medical informatics: Augmentation of domain lexicon and senses required, such as "dead" (Smith and Fellbaum, 2004)
Collocation-dictionary construction (Kim, Zhang, and Kim 2001)
Controlled English to Logic Translator (Pease and Fellbaum, 2004)
SUMO ("the only formal ontology that has been mapped to all of the WordNet lexicon")
SearchAide ("expert system designed to help novice users search the World Wide Web")