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: While a lot of attention in recent years has been focused on his sons , Princes William and Harry , Charles is next in line to the British throne . 2: But as part of his interest in sustainability , he has championed organic farming and gardening for many years , including on his large country estates . 3: Charles , an advocate of organic farming and traditional architecture , is heir to British throne .

1: Charles 2: he 3: Charles , an advocate of organic farming and traditional architecture