###Instruction: Multi-class classification, answer with one of the labels:['no_consensus', 'delete', 'keep', 'comment', 'merge', 'redirect'] : ###Input:  Q1493325: Optical ring resonator (Q1493325) : type of optical resonator : ( delete | history | links | entity usage | logs ) Merged with Q4228979 . Boehm ( talk ) 14:46, 30 November 2014 (UTC)