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 ) North Korea is in the headlines again . 2: According to a Wall Street Journal report Thursday , Chinese nuclear experts have told the United States that Pyongyang may already have as many as 20 nuclear warheads . 3: Report says North Korea may have as many as 20 nuclear warheads .

1: North Korea 2: Pyongyang 3: North Korea