###Instruction: Multi-class classification, answer with one of the labels:['no_consensus', 'delete', 'keep', 'comment', 'merge', 'redirect'] : ###Input:  Q2028544: friction stir welding (Q2028544) : process to join two surfaces without melting : ( delete | history | links | entity usage | logs ) Merged with Q2068127 . Erik Wannee ( talk ) 12:25, 20 June 2013 (UTC)