###Instruction: Multi-class classification, answer with one of the labels:['no_consensus', 'delete', 'keep', 'comment', 'merge', 'redirect'] : ###Input:  Q23057709: integration by substitution (Q23057709) : method of integration : ( delete | history | links | entity usage | logs ) Duplication of Q1071270 -- Lydie Noria ( talk ) 12:50, 15 March 2016 (UTC)