MJ23 Q3 Blackbosca Co Royalty payment

“In addition, Blackbosca Co will receive a royalty payment from the investment in Üskistan, payable annually. The first year’s royalty payment is fixed at $2·5m but this will increase annually at a rate of 5% in subsequent years.”

Why is the royalty payment not inflated? The question says the estimates of cashflows are inflation adjusted. However, for royalty they just say a fixed amount. How to know that this has already been inflation adjusted or examiner has just mentioned a specific amount?