###Instruction: Multi-class classification, answer with one of the labels:['no_consensus', 'delete', 'keep', 'comment', 'merge', 'redirect'] : ###Input:  Q18377196: Porro–Abbe prism (Q18377196) : no description : ( delete | history | links | entity usage | logs ) Merged with Q3403926 . Movses ( talk ) 12:46, 4 November 2014 (UTC)