###Instruction: Multi-class classification, answer with one of the labels:['no_consensus', 'delete', 'keep', 'comment', 'merge', 'redirect'] : ###Input:  Q3550897: lithostratigraphic unit (Q3550897) : geologic unit denoting a specific body of rock based on its lithologic or stratigraphic characteristics : ( delete | history | links | entity usage | logs ) Merged with Q7044115 . LaddΩ chat ;) 00:51, 8 February 2014 (UTC)