Definition: You will be given three sentences. Read them, then identify a noun phrase (person, place, or thing) or event that is shared between all three sentences. As the output, write the span of the text corresponding to that phrase in each sentence. Keep the order of the sentences, that is, your answer should look like: 1: *a phras from sentence 1e* 2: *a phras from sentence 2* 3: *a phrase from sentence 3*
Input: 1: We have economic and security interests that are at stake in this election , especially as Nigeria has been one of our strongest allies in the region since military rule there ended . 2: But it is not just about the leadership -- this election offers the chance for all Nigerians to choose their future , and decide which policies will shape the next four years . 3: U.S. ties to this regional ally are crucial ; U.S. economic and security interests at stake as Nigeria 's voters choose their future .

1: Nigeria 2: Nigerians 3: regional ally