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 ) New Zealand police have revealed a threat to contaminate infant formula and other dairy formula with poison , in an apparent attempt to blackmail the government over its pest control policies . 2: The letters said the threat would be made public if the demand was not met . 3: Letters were sent containing contaminated formula and a demand to government .

1: an apparent attempt to blackmail the government over its pest control policies 2: the threat 3: a demand to government