I can talk about that in the context of oil sands mining, where often the federal trigger is legitimately triggered by a relatively small issue, some impact on water course, for example. That invokes federal involvement in the process. There's a very, very extensive provincial review of those projects. That would be an example of one, from my perspective.
I want to clarify, though, that when we talk about substitution or equivalency, we talk about best-placed regulator. I think this is a very important principle: this is not always about a province or always the federal government; it's about figuring out which regulator is best positioned to look at the issue and then substituting on that basis. I think sometimes we get drawn into it being all provincial or all federal. That's not the approach we take. We use very deliberately the terminology “best-placed regulator”.