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: ( CNN ) Late one night on Facebook , a girl with cystic fibrosis messaged a boy with cystic fibrosis , and both their lives were changed forever . 2: Katie and Dalton were glad to hear it . 3: Katie and Dalton met as patients dealing with cystic fibrosis .

1: a girl with cystic fibrosis 2: Katie 3: Katie