And this is just another way of saying that B is a subset of A. But the way you could think about this is A contains every element that is in B. And it might contain more. It might contain exactly every element. Because you can kind of view this as you kind of have the equal symbol there if you were to view this as greater than or equal. They're not quite exactly the same thing. But we know already that we could also write A is a strict superset of B, which means that A contains everything B has and then some.