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: So what was Carson 's scientific support for his argument that being gay is a choice ? 2: Prisoners do engage in homosexual practices , but that does n't mean they've gone from straight to gay , the experts said . 3: Dr. Ben Carson told CNN that being gay is a choice and pointed to prisoners who go in straight and leave gay .

1: gay 2: gay 3: gay