Premise: Gregor Clegane . Introduced in 1996 's A Game of Thrones , Gregor is the older brother of Sandor Clegane , from the fictional kingdom of Westeros . Ser Gregor Clegane is a huge knight and the elder brother of Sandor Clegane .
Hypothesis: Gregor Clegane's younger brother is Sandor Clegane.
Label: ENTAILMENT