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: ISIS was ejected from the palaces compound in fierce fighting , they said , adding that there may still be booby traps . 2: Iraqi security said that the few ISIS militants left in the city are hiding inside houses hoping to escape in the dark . 3: ISIS departs , leaving city strewn with booby traps , explosive-filled vehicles .

1: ISIS 2: ISIS militants 3: ISIS