Given the task definition, example input & output, solve the new input case.
From the given sentence, extract the phrase (often noun or verb) that carries the given relationship. The generated phrase should be present in the sentence.
Example: Given Relationship: 'make', Sentence: 'Jenny made the announcement that her baby was an alien.'
Output: made
The output relationship - made, is a correct verb form of the given relationship - make, and it is also used in the given sentence

New input case for you: Given Relationship: 'be country in', Sentence: '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 .'
Output:
countries