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: In 2011 , the year in which an uprising ousted longtime President Zine al-Abidine Ben Ali -- an event credited with triggering the Arab Spring -- that number fell below 4.8 million . 2: With calm restored in recent years -- despite security concerns from neighboring Libya and ongoing political tensions -- those numbers have been on the rise , helped by costly advertising campaigns . 3: Tourism numbers had been increasing in Tunisia in recent years , following downturn after 2011 Arab Spring unrest .

1: that number 2: those numbers 3: Tourism numbers