###Instruction: Multi-class classification, answer with one of the labels:['no_consensus', 'delete', 'keep', 'comment', 'merge', 'redirect'] : ###Input:  Q11680523: control grid (Q11680523) : vacuum tube electrode directly controlling the anode current : ( delete | history | links | entity usage | logs ) Empty - duplicate of Q1231614 . -- Chrumps ( talk ) 22:19, 29 April 2013 (UTC) 