John, a lot of questions there. So, the first one, it'd be hard for us to imagine that it's – how to pick the WFE number, but it sure feels like it will be consistent with a $75 billion-ish level compared to order patterns that we've seen in the past. And the best metric for us is simply a full count, if you will, for some OEMs. And so, when we compare run rate one year to run with the next, we'd say it's pretty consistent with the $75 billion spend. But I couldn't put too much precision around that. But we'd say that's consistent. In terms of the brick and mortar and the tool counts, most everything that we ship, it relates to capacity. There's no question about it. But as you know, the fabs are generally – the brick and mortar is put up and then the fabs are populated in phases. And so, you're right, some of the contamination control tools go in a little bit earlier. But the entire fab isn't filled with contamination control, but it does go in a little bit earlier. Probably similar to the metrology tools that go into a factory. But we see steady build out. So, when there's a large fab built and it gets populated in phases, we see that for the direct to fab contamination control systems that go in, but if there's a difference, it might be a lag of a quarter, but probably not more. And then, steadily, all the automation capabilities we provide to OEMs, they go in as those process tools go. And, John, same thing. Often, we'll ship and recognize revenue, say, for a robot or for a vacuum system that the OEM will recognize as revenue, maybe a quarter later. So, indeed, our revenue is probably always just a little bit in advance of what you'd see from a large OEM shipping product to those same fabs.