Don't Follow Those Cops!

 
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Cops must figure out their sanity and who is mafia based on other claimed roles in the setup. Meanwhile, mafia can't let slip that they know what setup it is, because each combination of maf roles are unique to one setup. Can the cops, with the aid of the town, outsmart the mafia before the mafia outsmart them?

P.S. This is Epic Mafia's 936th best setup.