Display only the first child of a book

cn flag

I have a book "continent". Child are like this : Continent > Country > State >cities > Street

There are several countries, several states, several cities.

When I visit a State, a City or streets, I want to have a block to display the Country (the first child of the book).

What I tried to do in Views: Relationship : Book parent Contextual filters : Node ID with the relationship Book parent Filter : depth = 2

It only displays the child ...

Do you have any idea about how to display a specific parent from a visited book page?

Sorry for my bad English.

I sit in a Tesla and translated this thread with Ai:


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