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: Aimed at creating an agrarian utopia , it would instead prove one of the worst genocides of the modern era , resulting in the deaths of at least 1.7 million Cambodians -- about a quarter of the country 's population -- over the next four years . 2: For decades after the Khmer Rouge were driven from Phnom Penh by Soviet-backed Vietnamese forces in January 1979 , the regime 's crimes were seldom spoken about , let alone attempts made to seek redress for victims . 3: At least 1.7 million people were killed in the subsequent four years , before the regime was driven out .

1: genocides 2: crimes 3: killed