Premise: Princess Margaret , Countess of Snowdon , ( Margaret Rose ; 21 August 1930 -- 9 February 2002 ) was the younger daughter of King George VI and Queen Elizabeth of the United Kingdom and the only sibling of Queen Elizabeth II . Margaret was often viewed as a controversial member of the British royal family .
Hypothesis: Princess Margaret, Countess of Snowdon is a member of the British royal family.
Label: ENTAILMENT