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: The boy 's body was torn apart by an explosion near the finish line of the Boston Marathon . 2: Richard 's description of the explosion 's horrifying aftermath capped a day of dramatic testimony as survivors shared their stories in the second day of the high-profile trial . 3: The second day of the Boston Marathon bombings trial is underway .

1: explosion 2: explosion 3: bombings