We have to rely on a rule-based trading order. This is very important. It's the same not only for Canada and China. We are having these discussions; it's not the first time that we have to enter into a technical and scientific discussion with another country to compare notes. It happens all the time between scientists.
There's no very clear answer to your question. It's a normal process. We have to go to the end of it. To do that, we have to have face-to-face meetings between scientists. Then they can challenge themselves.