I could maybe ask Susan Harper to speak. She is leading the process with Mercosur, but before I do, since we've already had some exchanges on this, I'll respond.
At this stage, we don't feel that we're wasting our time. We think there's an interesting opportunity here. There are some unanswered questions in terms of what Brazil and Mercosur would be interested in pursuing with us, and we have to look at what that would mean in terms of the overall package in an eventual negotiation or agreement. But at this stage, we haven't made a decision at all about whether we would recommend proceeding with a negotiation.