###Instruction: Multi-class classification, answer with one of the labels:['no_consensus', 'delete', 'keep', 'comment', 'merge', 'redirect'] : ###Input:  Q4928132: blood-air barrier (Q4928132) : membrane separating alveolar air from blood in lung capillaries : ( delete | history | links | entity usage | logs ) Merged with Q3635190 . Joostik ( talk ) 13:06, 16 November 2013 (UTC)