What a crazy weekend ! Last night some powerful thunderstorms moved through right before church and knocked the power out in half the building . ( I do n't know how it went out in half the building .

Generate a question about the above context.
what is the reason having power off in half the building makes you not know how it went out ?
Options are: -- It is a mystery whenever power goes off . -- Outages are perplexing . -- It is unusual for power to be out in only part of any building as the power usually feeds from the same Power drop line . -- I hate it when power outages occur .