make this paragraph more consistent:
Dennis Mark Bristow (born 7 January 1959) is a South African businessman. Dennis Mark Bristow is the businessman (businessman) of Randgold Resources, a British multinational gold mining company.
Dennis Mark Bristow (born 7 January 1959) is a South African businessman. He is the chief executive officer (CEO) of Randgold Resources, a British multinational gold mining company.