Royalities of other software

Hi
If I use EU to build simulation to train and test neural nets for other tasks. do I need to pay royalties on the sale of the Neural net. Is this like to “work for hire” rule?

thanks

Does the thing you sell contain any Unreal Engine? Or are you using Unreal Engine only for internal purposes?

No part of Unreal Engine will be in the product we sell. Unreal engine will only be used for internal purposes.

In the case that no part of Unreal Engine is in the product you sell, and Unreal Engine is only used internally to “train and test” the product you sell, I’m ok with no royalty.