With regard to the cycle time on innovation, if we go back to how SAGD started, these are five- to ten-year programs. Concepts are tested in the field and then moved to commercialization.
On the issue of solvents, while solvents have been used in the past for conventional recovery, the applications in the field have been under way for between five and eight years, I guess, in a variety of pilots. It's not only us, but there are a number of others who are now moving to commercialization.
On radio frequency, we're right at the generation of the tool level, and it will then move to the next phases of development. I would expect it will be five to seven years before we see that opportunity potentially going into commercial development.