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:  Boko Haram joining the ISIS fold makes sense to both groups ,  he said from Abuja , Nigeria . 2:  ISIS gets more international legitimacy as a global caliphate .  3: Expert says partnership will have benefits for both groups , including giving ISIS international legitimacy .

1: the ISIS fold 2: ISIS 3: ISIS