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: Two more African-American men joined in the beating , according to a police report about Monday 's incident . 2: It was caught on surveillance cameras on the MetroLink train and a passenger recorded it with a cell phone and posted the video online . 3: Two more young black men join in the beating , which is caught on cameras .

1: the beating 2: It 3: the beating