Input: Relationship: 'be country in', Argument/Subject 1: 'zimbabwe', Argument/Subject 2: 'africa'

Answer: A: In Africa , World Vision operates in 25 mostly sub-Saharan countries , including : Angola , Burundi , Chad , Congo , Ethiopia , Ghana , Kenya , Lesotho , Liberia , Malawi , Mali , Mauritania , Mozambique , Niger , Rwanda , Senegal , Sierra Leone , Somalia , South Africa , Sudan , Swaziland , Tanzania , Uganda , Zambia , and Zimbabwe .