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 nuclear submarine being repaired at a Russian shipyard has caught on fire , according to a law enforcement source speaking to Russia 's state-run news agency ITAR-Tass . 2:  There are no armaments or chemically active , dangerous substances , fissionable materials on it ,  Gladyshev said to Tass . 3: No  dangerous  substances on the submarine , shipyard spokesman told ITAR-Tass .

1: a law enforcement source 2: Gladyshev 3: shipyard spokesman