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 attempts by some in the GOP to undermine President Barack Obama 's Iranian policy certainly seem extraordinary . 2: Now , 47 senators have written an open letter to the Iranian regime to advise that any deal agreed to with Obama could be reversed after the 2016 presidential election . 3: Timothy Stanley : GOP senators ' letter to Iranian leaders seems extraordinary .

1: The attempts by some in the GOP to undermine President Barack Obama 's Iranian policy 2: an open letter to the Iranian regime 3: letter to Iranian leaders