Good morning all,
I have a puzzle for you 
From a given database organize like this:
column 1 : Country: (x= 1,2,3 ...) (1,2,3 by digital encoding)
2 : Region: (x = 1,2 ...)
3 City: (x= 1,2,3,4 ...)
4 Element: (x = text)
Attributes, properties are added to an associated category, we can for example add the spoken language (english: 1, French: 2 etc) which gives us a new column associated with Country.
I try to "select" or link the French speaking countries but without creating a new category (like country * language with english = 0)
Is it possible ? This is more of a normalization problem than programming on R but I know there are a lot of statisticians here 
(The final idea, just in case, is to propose an indicator of relevance or compatibility (in%) for the search)
Thanks for reading me 