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