In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].

Q: (CNN) -- Opposition to the Keystone XL pipeline, which would move crude oil from the Alberta oil sands in Canada to refineries on the Gulf Coast if approved by President Barack Obama, has long relied on questionable information about our project and the Canadian oil sands. A CNN op-ed by Tom Steyer has made some claims that need to be disputed. He and other opponents insist oil transported by Keystone XL is destined for export. Nothing could be further from the truth. The reality, as TransCanada Corp. CEO Russ Girling has said, is not a drop of the oil transported through Keystone would be exported -- period.Alexander Pourbaix says opponents are wrong on Keystone XL pipelineHe says contrary to what opponents say, "not a drop" of Keystone oil will be exportedPourbaix: State Department study has debunked concerns over environment and marketHe says during transition to new energy sources, U.S. should get its oil from a trusted nation 
 Question:We urge Obama to give a green light to the _.

A: Keystone XL pipeline
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Q: Washington (CNN) -- President Barack Obama used a Memorial Day ceremony to say it is time for America to properly welcome home Vietnam veterans and show them and their families the respect and gratitude they deserved but didn't receive decades ago. "You came home and sometimes were denigrated when you should have been celebrated," Obama said beneath a scorching sun at the Vietnam Veterans Memorial. "It was a national shame, a disgrace that should have never happened. That's why here today, we resolve that it will not happen again." The event, which launched a 13-year Vietnam War 50th anniversary commemoration, was the culmination of a day of somber events on the annual holiday honoring America's war dead.NEW: President Obama calls the denigration of Vietnam veterans a "national shame""America will be there for you," Obama tells veterans and their familiesMemorial Day launches a 13-year commemoration of the Vietnam War's 50th anniversaryObama lays a wreath to the fallen at Arlington National Cemetery 
 Question:This year marks the 50th anniversary of the _ deploying a significant military presence in Vietnam.

A: America
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Q: A Nebraska woman whose son is accused in her murder was likely still alive when the 25-year-old man and his girlfriend dumped her in a southeast Omaha ditch on May 5, a detective said Friday. Roberto Martinez-Marinero stabbed Jesus Ismenia Marinero, beat her with a baseball bat at his home and then, with help from Gabriela Guevara, left the body in a ditch, according to prosecutors. They say he also dumped his 11-month-old half brother, Angel Ramirez-Marinero, in a trash bin and threw his four-year-old half brother, Josue Ramirez-Marinero, from an Elkhorn River bridge. Shocked relatives of Marinero gasped and wept and the judge in the case was prompted to raise the Guevara's bail to $5million in response to Detective Wendi Dye's testimony.Jesus Ismenia Marinero tossed in a ditch in Omaha, Nebraska, on May 5Roberto Martinez-Marinero accused of beating with bat and dumping bodyHad help with ditching body from 25-year-old girlfriend Gabriela GuevaraAccused of dumping 11-month-old Angel Ramirez-Marinero in the trash and tossing four-year-old Josue Ramirez-Marinero from a bridgeInfant found alive with bruises but toddler found dead in water on May 15 
 Question:Martinez-_ is charged with two counts of first-degree murder, kidnapping and a weapons charge.

A:
Marinero
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