What do the parenthesis mean in the set builder notation $\{(x,S)\mid x\in S,S\in {2}^{A}\}$

I've looked around but can't quite figure out what the set produced by the builder notation in the title would actually look like - specifically, what element does (x,S) actually yield? If someone could explain what the output of the statement would look like I would really appreciate it, thank you.

I've looked around but can't quite figure out what the set produced by the builder notation in the title would actually look like - specifically, what element does (x,S) actually yield? If someone could explain what the output of the statement would look like I would really appreciate it, thank you.