A recently granted patent from Google covers supporting querying and predictions. It does this by focusing on user-specific knowledge graphs.
Those User Specific Knowledge Graphs can be specific to particular users.
Google can use those graphs to provide results in response to one or more queries submitted by the user, and/or to show data that is relevant to the user.
I thought of another patent I wrote about when I saw this patent, in the post Answering Questions Using Knowledge Graphs. In that one, Google may search on a question someone asks by building a knowledge graph from search results, to use to find the answer to their question.
So Google doesn’t just have one knowledge graph but may use many knowledge graphs.
New ones for questions that may be asked, or for different people asking those questions.