Keyword explorer and relevancy

[seoanalytics]

Hello,

In the keyword explorer when I group keywords by lexical similarity should I only choose keywords that have a high relevancy to my seed keyword (the one I typed and want to rank on ?

Let me give you an example. Let's say my seed keyword (the one I want to rank on) is "Alsace bike tours. With the keyword explorer I group the keywords and find the group " cycling in Alsace" (ok I take that one because it relevant to "Alsace bike tours" then I find "Strasbourg to Colmar by bike" I also take this one because it is also relevant to "alsace bike tours" but what about concepts like "Alsace wine region", Alsatian architecture, wines of Alsace, cuisine of Alsace or prettiest villages in Alsace... should I totally dismiss those from my content because they aren't relevant to my keyword "Alsace bike tours" or is it ok to use them but it won't help me at all ?

Thank you,