These agreements are public, and I think for the most part it's fairly straightforward to get access to them. We can certainly look at them as models that can give us some guidance, but we will obviously shape what we're looking for to meet our particular needs. So what the Americans or others may be prepared to accept or not accept doesn't necessarily square with what we wish to pursue, or what our bottom line may be. So it's a guide, but only up to a point.
We also have to keep in mind that the U.S., because of its significant economic performance and trade and investment links with some of these same countries, may have leverage that we don't have at a given time, simply because of the scale of the opportunities in play. So use it, but you have to be conscious of its limitations.