Reuse of sample scenes is that possible?

This is a newbie question, please forgive my ignorance. My question is: could I reuse f.eks the architectural rendering sample from epic ? Let say I will create my own interior populated with my own furnitures. Or will the files that comes with that scene / level be attached to that spesific theme? Here is what I tought I could do: delete the sample scene and replace it with my own.