###Instruction: Multi-class classification, answer with one of the labels:['no_consensus', 'delete', 'keep', 'comment', 'merge', 'redirect'] : ###Input:  Q13162128: D-brane (Q13162128) : brane on which strings can attach, thereby inducing Dirichlet boundary conditions on the string worldsheet theory : ( delete | history | links | entity usage | logs ) Merged into Q137880 .
-- 218.252.84.144 13:46, 16 May 2013 (UTC) 