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 ) This week 's attack on Garissa University College is Al-Shabaab 's fifth major assault in Kenya in the past year and a half . 2: The Thursday massacre was the most deadly assault so far , with 147 dead , easily eclipsing the terrorist group 's most notorious attack , a four-day siege in late September 2013 at the Westgate Mall in Nairobi in which 67 people were killed . 3: Al-Shabaab 's attack on Garissa University College is the group 's deadliest so far in Kenya .

1: This week 's attack on Garissa University College 2: The Thursday massacre 3: Al-Shabaab 's attack on Garissa University College