I read it as various levels of subsets, like “Ethnic” covers everything that’s not found at Cracker Barrel, “Asian” narrows that down to only Asian foods (including sushi), and “Sushi” just limits you to sushi. So the larger, vaguer categories are inclusive, and just give the roller more choice.
I guess that gives you a 50/50 shot of being able to order a panini, but only a 33% chance of having escargot or tapas. And less than a 17% chance of scoring a Big Mac. But if you really like sushi, you have a 67% chance of being able to order it.
