At Google, one of the main things I and my team work on is unstructured question answering, like you get when asking Google "How often does Halley's Comet come around?",  "What was the name of Invader Zim's robot?" or "How many cards in a standard deck?"

But, we realized sometimes you don't even know what question to ask, but would like to learn something cool, so we made it so you can just say to Google: "I'm Feeling Curious"

https://www.google.com/search?q=i%27m+feeling+curious