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: 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: (CNN) -- The fiancee of Oregon Gov. John Kitzhaber lived on property that was to be used for growing marijuana, and married an illegal immigrant for money during a period in her life when she was "associating with the wrong kind of people and making mistakes," according to a statement she released Tuesday. Cylvia Hayes, 47, admitted to living on a property in Okanogan, Oregon, in 1997 that was supposed to become a marijuana growing operation, but she said it never materialized. "I am not proud of that brief period of time - I was involved in an abusive relationship with a dangerous man," Hayes said.NEW: Oregon governor says his fiancee's past illegal activities are a private matterOregon's "first lady" Cylvia Hayes admits involvement in a plan for a pot farm in 1997She says she associated with the "wrong kind of people" at the timeThe same year she also married an immigrant for money 
 Question:"_ deserved to know the history of the person he was forming a relationship with.

A: John Kitzhaber
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Q: Hamburg, Germany (CNN) President Donald Trump has long said China is the lynchpin to solving North Korea's saber rattling with missile tests. But his tact with the Asian superpower has run the gamut: He has thanked the Chinese for their support, argued they aren't helping defuse the situation and then written them off as willing partners -- all in the span of a few months. On Saturday here in Germany for the G20, Trump urged action on North Korea as he met with Chinese President Xi Jinping. "Something has to be done about it," Trump argued ominously during the brief public portion of his meeting with Xi.The President sat down with Chinese President Xi Jinping on Saturday afternoonThe United States and China are currently split on the best way to deal with North Korean leader Kim Jong Un 
 Question:"_ has taken significant action, and then ... they've paused and didn't take additional action."

A:
China
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