Eric Breck Marc Light Gideon S. Mann Ellen Riloff Brianne Brown Pranav Anand Mats Rooth Michael Thelen Looking Under the Hood : Tools for Diagnosing your Question Answering Engine http://arxiv.org/abs/cs.CL/0107006 2001 CoRR cs.CL/0107006 db/journals/corr/corr0107.html#cs-CL-0107006 informal publication