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: ( CNN ) The last time Muhammadu Buhari came to power in Nigeria , it was by force . 2: For the first time in Nigeria 's history , the opposition defeated the ruling party in democratic elections . 3: Muhammadu Buhari 's win marks the first democratic transition of power from a ruling party to the opposition .

1: Muhammadu Buhari 2: the opposition 3: Muhammadu Buhari 's