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: According to the Choson Sinbo , a North Korean factory sent its staff abroad in an attempt to improve its food products -- which include baguettes and sweet potato cakes . 2: Last April , officials from the reclusive authoritarian state traveled to the National Dairy Industry College in Franche-Comte , eastern France , in an attempt to master the art of cheese making . 3: Last year , North Korean officials went to France to look for cheese recipes .

1: its staff 2: officials from the reclusive authoritarian state 3: North Korean officials