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: What 's different this time from 1934 is the size and density of Kathmandu , which suffered the brunt of damage in both earthquakes . 2:  When you get a vast population in the kind of building infrastructure that is n't equipped to handle shaking of an earthquake this size , that 's when you see the scale of disaster we 're seeing now .  3: Population density , weak building infrastructure amplified damage , USGS spokesman says .

1: size and density of Kathmandu 2: a vast population 3: Population density