Premise: Elizabeth II ( Elizabeth Alexandra Mary ; born 21 April 1926 ) has been Queen of the United Kingdom , Canada , Australia , and New Zealand since 6 February 1952 . She is the world 's oldest reigning monarch as well as Britain 's longest-lived . In 2017 she became the first British monarch to commemorate a Sapphire Jubilee .
Hypothesis: Elizabeth II is British.
Label: ENTAILMENT