###Instruction: Multi-class classification, answer with one of the labels:['no_consensus', 'delete', 'keep', 'comment', 'merge', 'redirect'] : ###Input:  Q16639067: Chain termination (Q16639067) : chemical reaction that terminates a chain reaction : ( delete | history | links | entity usage | logs ) Merged with Q3503623 . UAwiki ( talk ) 04:26, 19 October 2014 (UTC)