I think to do a wholesale swap out, you’re basically talking about, replacing the frontend steam methane reformers with huge electrolyzers and that is a lot more capital, economically today that doesn’t make sense, because the price of North American natural gas is so reasonable compared to the other prices of energy, particularly if you’re talking about renewable energy.
In the context of the input sentence, determine the relationship between 'North' and 'steam'.
Options: distributed by, location of formation, chairperson, industry