Question: In game of thrones who is john snow?
Disambiguated questions and answers: question: In game of  Thrones, who plays Jon Snow?
In Game of Thrones, what is John Snow's significance?
answer: Kit Harington
14-year-old illegitimate son of Eddard "Ned" Stark and half-brother to Robb, Sansa, Arya, Bran and Rickon.
Natural Questions answer: Kit Harington (from the Wikipedia article "Jon Snow (character)")