When asking about the Beatles, are they asking about those still living or all of the founding members? Sice many bands have changed members over time, could they be asking about the time in the band or their age in years?

Suse, this was easy for the Beatles since they had a single lineup and are popular enough that all of that is easy to find. But it is a good example of a simple question that could be asking different things based on context and even if they get an answer it isn't necessarily what they are looking for, but they didn't know how to ask. Follow up questions are possible when interacting with others who may point out missing context, but not for search engines.

Also, kind of funny that you are an instance with 'discuss' in the name and you are opposed to discussion about easy to search things.