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 ) Pi Day is going to be extra special this year , as 2015 stretches the symbolic March 14 celebration out a little longer to 3.1415 . 2: And if you mark pi at 9:26.53 in the morning or night , you 're just a little more in line with the celebrated irrational number that never ends . 3: Pi Day is celebrated March 14 in honor of the famed irrational number .

1: celebration 2: celebrated 3: celebrated