Premise: Nasir Bin Olu Dara Jones ( [ nɑːˈsɪər ] born September 14 , 1973 ) , better known by his stage name Nas [ ˈnɑːz ] , is an American rapper , record producer , actor , and entrepreneur . His musical career began in 1991 , as a featured artist on Main Source 's `` Live at the Barbeque '' .
Hypothesis: Nas has been working since at least 1966.
Label: CONTRADICTION