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 ) It 's no surprise which image is making the headlines from this week 's gathering of leaders from nearly three dozen nations in Panama : A historic handshake between President Barack Obama and Cuban President Raul Castro . 2: The reality is that the United States has been losing ground in this increasingly important region , and Obama needs to put on a strong performance in Panama at the Summit of the Americas if the U.S . is to have a chance of improving ties with neighbors who should be best friends , but who have drifted away as America has been focused on challenges at home and instability in the Middle East . 3: President Barack Obama is attending the Summit of the Americas .

1: President Barack Obama 2: Obama 3: President Barack Obama