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: Model Anna Duritskaya , 23 , was walking with Nemtsov on Friday night when a gunman shot the politician about 100 meters ( 330 feet ) from the Kremlin . 2: Critics of Putin have in the past suffered miserable fates . 3: Boris Nemtsov , a staunch critic of Putin 's , was gunned down as he walked with Duritskaya .

1: Nemtsov 2: Critics of Putin 3: Boris Nemtsov , a staunch critic of Putin 's