###Instruction: Multi-class classification, answer with one of the labels:['no_consensus', 'delete', 'keep', 'comment', 'merge', 'redirect'] : ###Input:  Q4337686: Aircraft principal axes (Q4337686) : prociple directions in aviation : ( delete | history | links | entity usage | logs ) Duplicate of Q639090 Artvill ( talk ) 15:41, 2 April 2013 (UTC)