Premise: John Calvin Coolidge Jr. ( [ ˈkuːlɪdʒ ] July 4 , 1872 -- January 5 , 1933 ) was the 30th President of the United States ( 1923 -- 29 ) . Soon after , he was elected as the 29th vice president in 1920 and succeeded to the presidency upon the sudden death of Warren G. Harding in 1923 . Warren Gamaliel Harding ( November 2 , 1865 -- August 2 , 1923 ) was the 29th President of the United States , serving from March 4 , 1921 , until his death in 1923 . Harding died of a heart attack in San Francisco while on a western speaking tour ; he was succeeded by his vice president , Calvin Coolidge .
Hypothesis: In 1923, Warren G. Harding died.
Label: ENTAILMENT