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].

Example Input: (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 _.
Example Output: Keystone XL pipeline

Example Input: Lagos, Nigeria (CNN) The father of one of the missing Nigerian schoolgirls abducted from Chibok two years ago has told CNN he is overjoyed to see her alive on a new video released by the terrorist group Sunday. Yakubu Kabu confirmed to CNN that he saw his daughter speaking in the new video, which demands the release of Boko Haram fighters in exchange for the kidnapped girls. The Nigerian government has said it is still "in touch" with Boko Haram and "working for the girls' release," the Federal Ministry of Information and Culture said on their official Facebook page. "We are being extremely careful because the situation has been compounded by the split in the leadership of Boko Haram," said Alhaji Lai Mohammed, Minister of Information of Culture, according to the statement.A Boko Haram militant tells Nigeria to release jailed fighters in exchange for abducted girlsThe man says at least 40 of the girls have been married off 
 Question:Read more: _ victim -- "I cried for someone to help".
Example Output: Boko Haram

Example Input: Google has unveiled a tiny HDMI dongle that can turn any TV into a fully fledged computer. Called the Chromebit, it uses Google's Chrome OS. It contains a fully featured PC which uses the  TV as its display, and wirelessly connects to a keyboard and mouse using bluetooth. Scroll down for video The new Chromebit will go on sale later this year from laptop maker Asus This chromebit has a HDMI port at one end which swivels so it can easily be plugged in. It also contains: Rockchip 3288 SoC processor 2GB of RAM 16GB of eMMC memory,Computer contains a HDMI port allowing it to be plugged straight into a TVRuns Google's ChromeOS softwareFirm also revealed two new laptops costing just $149 
 Question:Various PC manufacturers have been working with Google to design lightweight laptops running on the _ operating system since 2011.
Example Output:
Chrome OS.