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*
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Question: 1: Los Angeles ( CNN ) Even as major airports across the country clamp down on employee screening , a lone wolf could still potentially slip through security , a top airport official said . 2:  I agree that in any airport throughout the United States and here also , there is never a 100 % guarantee that somebody who wanted to do something illegal or wrong could n't make that happen ,  Gannon said . 3: Still , there 's never a 100 % guarantee of safety , airport official says .

Answer: 1: airports 2: airport 3: airport


Question: 1: On a mobile site , which was still active , the network said it was  hacked by an Islamist group .  2: But there was no immediate claim of responsibility by ISIS or any other group . 3: The network blames an  Islamist group  ; there 's no claim of responsibility .

Answer: 1: an Islamist group 2: ISIS or any other group 3: an `` Islamist group


Question: 1: The group said it launched an assault on the Baiji oil refinery late Saturday . 2: By Sunday , ISIS said its fighters were inside the refinery and controlled several buildings , but Iraqi government security officials denied that claim and insisted Iraqi forces remain in full control . 3: ISIS says it controls several buildings at the Baiji oil refinery .

Answer:
1: The group 2: ISIS 3: ISIS