###Instruction: Multi-class classification, answer with one of the labels:['no_consensus', 'delete', 'keep', 'comment', 'merge', 'redirect'] : ###Input:  Q16535018: International Year of Light (Q16535018) : 2015 United Nations observance to raise awareness of light science and its applications : ( delete | history | links | entity usage | logs ) Merged with Q15646474 Same subject. Py4nf ( talk ) 01:58, 23 August 2014 (UTC)