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: That , he said , should be  sufficient to take advantage of this once-in-a-lifetime opportunity to see whether or not we can at least take the nuclear issue off the table ,  he said . 2: Obama said even if Iran ca n't be trusted , there 's still a case to be made for the deal . 3: Obama calls the nuclear deal with Iran a  once-in-a-lifetime opportunity 
[EX A]: 1: he 2: Obama 3: Obama

[EX Q]: 1: It may help scientists better understand why Yellowstone 's previous eruptions , in prehistoric times , were some of Earth 's largest explosions in the last few million years . 2: Volcanic activity triggers 2,000 to 3,000 small earthquakes per year , and the shake and shock waves travel at different speeds through molten , hot and other rock . 3: Scientist measured the thousands of small earthquakes in Yellowstone to scan the earth underneath it .
[EX A]: 1: Yellowstone 's previous eruptions 2: 2,000 to 3,000 small earthquakes per year 3: small earthquakes in Yellowstone

[EX Q]: 1: Sanaa , Yemen ( CNN ) Oversized military trucks painted in desert beige hauled tanks in the same camouflage color down a dark highway late Saturday past glowing billboards in the Saudi Arabian town of Jazan . 2: With the border with Yemen little more than 20 miles away , the trucks captured on a video distributed by the news agency Reuters also carried a message : Suggestions of a ground incursion into Yemen , which is in the throes of a Houthi rebel uprising , may be more than just talk . 3: Reuters video shows trucks carrying tanks in Saudi Arabia near Yemen border .
[EX A]:
1: Oversized military trucks painted in desert beige 2: the trucks 3: trucks carrying tanks in Saudi Arabia near Yemen border