Question: Which addition of the UEFA European Championship is the 2018–19 UEFA Nations League part of the qualification for?
Sentence (from "UEFA Euro 2020"): The 2020 UEFA European Football Championship, commonly referred to as UEFA Euro 2020 or simply Euro 2020, will be the 16th edition of the UEFA European Championship, the quadrennial international men's football championship of Europe organized by UEFA.
Relevant evidence: Yes