Premise: Ser Gregor Clegane , nicknamed The Mountain , is a fictional character in the A Song of Ice and Fire series of fantasy novels by American author George R. R. Martin , and its television adaptation Game of Thrones . Ser Gregor Clegane is a huge knight and the elder brother of Sandor Clegane .
Hypothesis: Gregor Clegane is a knight.
Label: ENTAILMENT