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: Cuba has historically been the wrench in the diplomatic machinery , with some Latin American leaders threatening not to attend the Summit of the Americas if the United States and Canada did n't agree to invite President Raul Castro . 2: Later , Obama issued an executive order sanctioning seven Venezuelan officials for human rights violations and saying the country was a  threat to national security .  3: U.S. , Venezuelan relations threaten to overshadow Obama , Castro meeting .

1: Latin American 2: Venezuelan 3: Venezuelan