TASK 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*
PROBLEM: 1: The defense 's transition from one brother to the other begins in the ambulances that rushed the brothers from their respective final showdowns with police in Watertown , Massachusetts , on April 19 , 2013 . 2: They have portrayed him as obsessed with jihad , spending hours in his computer trolling al Qaeda-style websites . 3: Defense : Brother Tamerlan , who was killed during police showdown , was obsessed with jihad .

SOLUTION: 1: one brother 2: him 3: Brother Tamerlan , who was killed during police showdown

PROBLEM: 1: The prosecutor thanked the public for the information that led to the arrest . 2: He said police served a search warrant on Williams ' residence where they seized a.40 - caliber handgun ,  which has been tied to the shell casings that were recovered  at the scene of the shooting . 3: Prosecutor thanks the public for leading police to a .40 - caliber allegedly used in shooting .

SOLUTION: 1: The prosecutor 2: He 3: Prosecutor

PROBLEM: 1: ( CNN ) A Delaware father is in stable condition and improving as his two boys remain in critical condition after they became sick -- perhaps from pesticide exposure , federal officials say -- during a trip to the U.S . Virgin Islands . 2: The EPA said it is working with local government agencies to investigate whether the family was made ill after a fumigation at the resort on March 18 and whether any environmental regulations or laws were violated . 3: A Delaware family becomes ill at a resort in the U.S. Virgin Islands .

SOLUTION:
1: they 2: the family 3: A Delaware family