UWarren Buffett urhoxile kwiGates Foundation, unikele ngesiqingatha sobutyebi bakhe

Utyalo-mali lwe-Billionaire uWarren Buffett uthe uyarhoxa njengotrasti weBill kunye neMelinda Gates Foundation, kwaye unikele ngesiqingatha sobutyebi bakhe kububele ukusukela oko wathembisa kwiminyaka eli-15 eyadlulayo.