I wonder how useful this will be if you can only ask a single question or a set of questions that can be easily expressed in single line text field?

If I'm asking something like, "What is the capitol of Nebraska?" why not just get directed to the Wikipedia entry where I can learn a lot more than the one fact that answers what I just asked?

If Alpha is actually going to do computation, I'd rather be able to use it for something more complex than a single natural language query.