PropBank is a corpus that is annotated with verbal propositions and their arguments—a "proposition bank". Although "PropBank" refers to a specific corpus produced by Martha Palmer et al.,[1] the term propbank is also coming to be used as a common noun referring to any corpus that has been annotated with propositions and their arguments.
The PropBank project has played a role in recent[when?] research in natural language processing, and has been used in semantic role labelling.[2]