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*

1: Before last week 's blast , the restaurant 's owner had smelled gas and contacted the building 's owner , but did n't contact authorities . 2:  They should have called 911 ,  he said . 3: Emergency commissioner : Restaurant owner smelled gas , but did n't call 911 .
1: authorities 2: 911 3: 911

1: But Aden remains a city not fully in the hands either of Houthi rebels or forces loyal to the ousted government of President Abdu Rabu Mansour Hadi . 2: Given that control of the city is still divided , there is a feeling that not enough of what the Saudis set out to do has been accomplished . 3: Control of strategic seaport of Aden divided between Houthi rebels and government loyalists .
1: Aden 2: the city 3: strategic seaport of Aden

1: Academics who must say something new or different to garner interest in their work may describe the agendas of ISIS and al Qaeda as distinctly different . 2: History has shown the dangers that millions can be placed in if our leaders do n't face down a looming threat by calling it what it is and putting our full weight behind efforts to vanquish it . 3: Al Qaeda still a looming threat , they say .

1: al Qaeda 2: a looming threat 3: Al Qaeda