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*

[EX Q]: 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 .
[EX A]: 1: airports 2: airport 3: airport

[EX Q]: 1: And the first day of the trial -- after opening statements -- revolved around a number of survivors of the attack , who recounted in detail the chaos of that day . 2: Boston Marathon bombing timeline . 3: The first day of the Boston Marathon bombings trial focuses on the survivors .
[EX A]: 1: the attack 2: Boston Marathon bombing 3: the Boston Marathon bombings

[EX Q]: 1:  It 's the most important ,  Eto'o said of the award . 2: This is where football wins , but when there are incidents like this , it 's shameful , but it does n't mean this will happen in the World Cup just because it 's in Russia . 3: Eto'o says he does not expect problems at 2018 World Cup in Russia .
[EX A]:
1: It 's the most important 2: World Cup just because it 's in Russia 3: 2018 World Cup in Russia