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: It 's the 122nd diamond found at Crater of Diamonds this year . 2: The area , which became a state park in 1972 , is the only public site in the world where -- for a small fee -- anyone can dig for diamonds and keep them . 3: Crater of Diamonds is the planet 's only public diamond search site .

1: Crater of Diamonds 2: The area , which became a state park in 1972 3: Crater of Diamonds