###Instruction: Multi-class classification, answer with one of the labels:['no_consensus', 'delete', 'keep', 'comment', 'merge', 'redirect'] : ###Input:  Q17992769: Sigma-class corvette (Q17992769) : ship class : ( delete | history | links | entity usage | logs ) Merged with Q1809156 . Marcol-it ( talk ) 16:56, 9 September 2014 (UTC)