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 ) President Barack Obama tied himself to the mast of a nuclear deal with Iran even before he became the Democratic candidate for president . 2: Obama is right that a diplomatic solution is the most desirable option . 3: Frida Ghitis : President Barack Obama is right to want a deal , but this one gives Iran too much .

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