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: Lausanne , Switzerland ( CNN ) A roller-coaster series of talks wrapped up Thursday in Lausanne as a group of world powers known as the P5 +1 reached a framework agreement with Iran over the country 's nuclear program . 2: But the talks this week were , nevertheless , historic , particularly for the otherwise frozen U.S.-Iranian relationship . 3: This week 's talks on an Iranian nuclear deal framework are historic .

1: A roller-coaster series of talks 2: the talks this week 3: This week 's talks on an Iranian nuclear deal framework