I tested it out search for [who is the president of russia?]
Then asking [how old is he?]
Then [who is his wife?]
But it got hung up on [do they have children?]
Google did go that far, by the way:
Either way, this is a major enhancement for Bing and great news! Bing said:
These improvements build on extensive work we have done to build out the Bing platform including investments in entity and conversational understanding. This is a long journey, and we expect to deliver a number of additional improvements in the days ahead.
Forum discussion at WebmasterWorld.