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: Santana recalled the moments when he recorded a roughly three-minute video of North Charleston Police officer Michael Slager shooting Walter Scott as Scott was running away Saturday . 2: Santana said when he first came on the scene while walking to his job he saw Slager on top of Scott , who was on the ground . 3: Witness who took video of shooting said when he arrived officer was on top of Walter Scott .

1: North Charleston Police officer Michael Slager 2: Slager 3: officer