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 ) As the world awaits a possible nuclear agreement between the United States and Iran , let us not forget : This is the second time in two years that President Barack Obama has pursued a nonproliferation deal with an unreformed regime in the Middle East . 2: Just weeks after claiming success , the administration quietly acknowledged that al-Assad had secretly retained some of his most lethal chemical weapons . 3: Cathy McMorris Rodgers : Obama administration let Syria get away with continued chemical weapons capability .

1: an unreformed regime in the Middle East 2: al-Assad 3: Syria