###Instruction: Multi-class classification, answer with one of the labels:['no_consensus', 'delete', 'keep', 'comment', 'merge', 'redirect'] : ###Input:  Q1515632: Speedlight (Q1515632) : brand name used by Nikon Corporation for their photographic flash units : ( delete | history | links | entity usage | logs ) Empty duplicate, merged into Q4049887 . -- Neojesus ( talk ) 13:44, 11 April 2013 (UTC)