###Instruction: Multi-class classification, answer with one of the labels:['no_consensus', 'delete', 'keep', 'comment', 'merge', 'redirect'] : ###Input:  Q18545704: autoignition temperature (Q18545704) : lowest temperature at which a material spontaneously ignites in a normal atmosphere without an external source of ignition : ( delete | history | links | entity usage | logs ) Duplicate of Q558378 which is empty, inaccurate, and contains spelling errors and generally bad style. Haplology ( talk ) 05:48, 17 November 2014 (UTC)