Where is Siri (on iOS5 on an iPhone 4S) get it's list of recognized locations, such as those used for location-based reminders, from?
I've seen demonstrations and have experimented a bit, but only a very few locations like "home" seem to work well. Is it necessary to set up named locations in Contacts? Does Siri use "world knowledge" from other sources (such as Maps or Yelp)? Is there a way for users to extend or configure the list of locations Siri recognizes, or for developers to create applications that do so?