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 ) Nigerians go to the polls on March 28 in a tight contest , which is getting extra attention after the original date was rescheduled at the last minute . 2: This election will be the first since Nigeria re-calculated it 's GDP and pulled ahead of South Africa to become the continent 's biggest economy . 3: Nigeria 's postponed Presidential election is slated to be held on March 28 .

1: a tight contest 2: This election 3: Nigeria 's postponed Presidential election