###Instruction: Multi-class classification, answer with one of the labels:['no_consensus', 'delete', 'keep', 'comment', 'merge', 'redirect'] : ###Input:  Q15720450: Arthur Louis Arthurovic de Jaczewski (Q15720450) : Russian botanist and lichenologist (1863-1932) : ( delete | history | links | entity usage | logs ) Merged with Q4539853 . Sergey kudryavtsev ( talk ) 06:09, 1 September 2014 (UTC)