How Seinfeld is helping AI understand your sarcasm

Have you ever asked Siri its opinion on the film Inception? Or whether it knows a good place to hide a dead body? 'Inception is about dreaming about dreaming about dreaming about dreaming about something or other. I fell asleep', is one of your answers. The answers are pre-programmed, rather than genuine reactions capable of passing the Turing test, but hint at one of the ultimate aims of artificial intelligence – creating machines we can chat with and which understand levels of irony.