QuestionBank is a corpus of 4000 parse-annotated questions for use in the development of parser-based linguistic resources for Question Answering. The corpus is described in more detail in my paper "QuestionBank: A corpus of Parse Annotated Questions This release of QuestionBank is a limited beta-release which does not feature traces and coindexation, and which has not been validated by annotators other than the author.

QuestionBank is provided free for research purposes as long as an appropriate reference to the above mentioned publication is included in any published work arising out of the use of QuestionBank.

Update 25/6/2010: I have made some minor corrections to address some typos and inconsistencies in the original file posted. (Thanks to Joakim Nivre for pointing those out)
Download QuestionBank beta