###Instruction: Multi-class classification, answer with one of the labels:['no_consensus', 'delete', 'keep', 'comment', 'merge', 'redirect'] : ###Input:  Q12823476: electron shell (Q12823476) : principal energy levels in atomic physics : ( delete | history | links | entity usage | logs ) Merged into Q193793 .
-- Mkratz ( talk ) 13:25, 25 May 2013 (UTC)