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: There 's another one , too : the first secretary of state to become president since James Buchanan . 2: Clinton 's biggest challenge on the campaign trail and in office should she win is whether she can develop a foreign policy vision and an effective approach to the world that strikes a better balance between the risk-readiness of George W . Bush and the risk-aversion of Barack Obama . 3: Miller : The former secretary of state has to decide whether she 's going to differ with Barack Obama 's handling of foreign policy .

1: the first secretary of state 2: Clinton 3: The former secretary of state