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: Gray was placed inside a police van and was able to talk , said Rodriguez who described Gray as upset . 2: What we do n't know : It 's unknown what caused the spinal cord injury that led to his death a week after the arrest , and it 's also unknown what , if anything , happened inside the van . 3: Gray was placed inside a police van after his arrest ; it 's unclear if anything happened inside the van .

1: a police van 2: the van 3: a police van