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: ( CNN ) A sixth suspect in the shooting death of a top Russian opposition figure blew himself up after a standoff with police in the capital of the Chechen Republic , state-run television reported Sunday . 2: Police surrounded the building and Shavano tried to escape , throwing a grenade at police officers before blowing himself up , the station said . 3: With police surrounding hiding place , sixth suspect kills himself , Russian media say .

1: police 2: Police 3: police