TASK 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*
PROBLEM: 1: Now CyArk , a non-profit company founded by an Iraqi-born engineer , is using groundbreaking laser scanning to ensure that -- at the very least -- incredibly accurate digital versions of the world 's treasures will stay with us forever . 2: Since then , Kacyra has been doing exactly that : in a 2011 TED talk he explained his quest to preserve our  collective treasure  , and he has a plan to scan 500 World Heritage sites in five years . 3: Founded by an Iraqi-born engineer , it plans to preserve 500 World Heritage sites within five years .

SOLUTION: 1: an Iraqi-born engineer 2: Kacyra 3: an Iraqi-born engineer

PROBLEM: 1: While a lot of attention in recent years has been focused on his sons , Princes William and Harry , Charles is next in line to the British throne . 2: But as part of his interest in sustainability , he has championed organic farming and gardening for many years , including on his large country estates . 3: Charles , an advocate of organic farming and traditional architecture , is heir to British throne .

SOLUTION: 1: Charles 2: he 3: Charles , an advocate of organic farming and traditional architecture

PROBLEM: 1: With reports that Lubitz apparently ignored those warnings , there are new calls from aviation experts to develop and deploy enhanced crash avoidance software that could take control of an aircraft away from a pilot and steer the plane to a safe altitude . 2: For example , he says , the Federal Aviation Administration rule that two people must always be in the cockpit during a flight might also have saved the Germanwings flight . 3: Autopilot could have taken control of Germanwings flight and flown plane to safe altitude .

SOLUTION:
1: an aircraft 2: the Germanwings flight 3: Germanwings flight