The point is that you don’t need to reason about the relationship because the name, in the local language, tells you everything you need to know. Of course, if

The point is that you don’t need to reason about the relationship because the name, in the local language, tells you everything you need to know. Of course, if you don’t speak the language then that’s not useful but the code is written for the end user to be able to use the labels, not for the software or its developer to be able to parse the family tree :)