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Ali, Muhammad Ali, Cassius Clay, Cassius Marcellus Clay | United States prizefighter who won the world heavyweight championship three times (born in 1942) | |
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Ali | the fourth caliph of Islam who is considered to be the first caliph by Shiites; he was a cousin and son-in-law of Muhammad; after his assassination Islam was divided into Shiite and Sunnite sects |