premise: The 2019 FIFA U-20 World Cup will be the 22nd edition of the FIFA U-20 World Cup, the biennial international men's youth football championship contested by the under-20 national teams of the member associations of FIFA, since its inception in 1977 as the FIFA World Youth Championship.
hypothesis: The FIFA U-20 World Cup started as a competition for young people.
reason: The FIFA U-20 World Cup started as the FIFA World Youth Championship. I think the system may not know that "young" and "youth" are related.