That's a great question.
I would say there's one distinction there, in that many of the biogas and RNG resources that are created are actually founded from waste materials as opposed to purpose-grown derived materials. When we're looking at the biogas and RNG resource, it's generally coming from agricultural livestock or residues, as well as municipal green bin materials and that type of thing.
In the liquid biofuels, that's a very different stream and a different process, but when we're looking at the gaseous side, looking at the opportunity to derive that from waste materials is where we've currently set our focus.