###Instruction: Multi-class classification, answer with one of the labels:['no_consensus', 'delete', 'keep', 'comment', 'merge', 'redirect'] : ###Input:  Q4456637: tetramethyllead (Q4456637) : chemical compound : ( delete | history | links | entity usage | logs ) Merged with Q425777 . — Ivan A. Krestinin ( talk ) 20:42, 23 March 2014 (UTC)