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: Body cameras are expensive to deploy , sure . 2: Most importantly , we have to ask ourselves this : What 's the value of a human life ? 3: O'Mara says such cameras are expensive , but cheaper than wrongful death payouts -- and the cost of a human life .

1: Body cameras 2: value 3: expensive