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: The cap of sea ice that spreads across the Arctic Ocean in winter appears to have been the smallest on record this year , according to NASA . 2: Scientists say it does n't necessarily follow that a low maximum winter extent will mean a record amount of shrinkage in sea ice over the summer , however . 3: Scientists say Arctic sea ice appears to have set a record low maximum extent this winter .

1: NASA 2: Scientists 3: Scientists