Mr. Chair, witnesses would be delighted if every question had as a preamble that you can answer or not.
I do not know exactly, but I would imagine it is really taking the volume of crude that is transported through pipelines over time, and looking at whatever might have happened in terms of spills, and then relating it back to that total volume. That said, I think it's a valid question that I would rather answer more scientifically and with better evidence. I'm happy to undertake to get an answer for you.