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: The Grand Renaissance Dam is being built on Blue Nile , a tributary of the Nile River which has been powering the agriculture of Sudan and Egypt -- through which it flows -- for millennia . 2: These countries have opposed the project in the past , fearing that the dam will reduce their share of the Nile water . 3: Neighboring Sudan and Egypt fear that the dam will affect their water supply .

1: Sudan and Egypt 2: These countries 3: Neighboring Sudan and Egypt