Sorry Dave, I'm Afraid I Can't Do That: Explaining Unachievable Robot Tasks Using Natural Language.
['Vasumathi Raman', 'Constantine Lignos', 'Cameron Finucane', 'Kenton Lee', 'Mitchell P. Marcus', 'Hadas Kress-Gazit']
Sorry Dave, I'm Afraid I Can't Do That: Explaining Unachievable Robot Tasks Using Natural Language.