premise: Today marks the 80th birthday of Her Majesty Queen Elizabeth II, whose reign has lasted over 54 years. Her Majesty became the first female to become the sovereign since Queen Victoria, who died in 1901 after a 64-year reign. She was crowned on June 2, 1953, in Westminster Abbey. It was the first coronation that was televised live. She is Queen of sixteen independent nations known as the Commonwealth Realms, which includes the United Kingdom.
hypothesis: Queen Elizabeth II is the head of the Commonwealth.