Read the object as a system
A prepaid meter needs credit before it can supply power. That mundane rule is the useful clue: first establish what form of credit the town used and where residents obtained it.
Layered signal
0/3 revealedReveal only what you need
01
Nudge
Signal withheld — open the preceding layer first.
02
Direction
Signal withheld — open the preceding layer first.
03
Verified boundary
Signal withheld — open the preceding layer first.