Work under this grant is intended to provide lexical resources for research on natural languages. The principal product is WordNet, a lexical database for English whose organization is inspired by current psycholinguistic theories of human lexical knowledge. Lexicalized concepts are organized by semantic relations for nouns, verbs, adjectives, and adverbs.
One such source of background knowledge is WordNet REF : a lexical database of nouns, verbs, adverbs, and adjectives.