Definition: 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].
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 _.

Keystone XL pipeline