Context aware software can be built only when rich repositories of background knowledge are available. They don't come cheap. Either you need hordes of linguist

Context aware software can be built only when rich repositories of background knowledge are available. They don't come cheap. Either you need hordes of linguists and domain experts or you get garbage. One can try using OpenCyc, FrameNet, WordNet or UMLS but it ain't easy. You might as well spent the time on writing Q/A templates for your bot. Hurdles, hurdles, hurdles. Nonetheless, Watson and Apple showed that there is something shiny on the other side of the rainbow.