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: And the first day of the trial -- after opening statements -- revolved around a number of survivors of the attack , who recounted in detail the chaos of that day . 2: Boston Marathon bombing timeline . 3: The first day of the Boston Marathon bombings trial focuses on the survivors .

1: the attack 2: Boston Marathon bombing 3: the Boston Marathon bombings