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].
--------
Question: NEW YORK (CNNMoney.com) -- U.S. President Barack Obama set his green plan into action Monday, potentially reversing several Bush-era decisions on global warming and fuel efficiency. U.S. President Barack Obama signs orders Monday on vehicle emissions and fuel efficiency standards. In his first major environmental acts as president, Obama directed his Environmental Protection Agency to review a California application to regulate greenhouse gases and told his Department of Transportation to begin implementing fuel efficiency standards passed last year but not implemented by the Bush administration. He also pushed for passage of the $825 billion economic stimulus package in the House and Senate. Those bills include money for investments in renewable energy, conservation and a better electric grid.Obama orders review of California request to regulate greenhouse gasesU.S. president orders government to implement fuel efficiency standardsAutomakers oppose plan as an expensive patchwork of lawsFormer President George W. Bush stopped earlier attempt for state standards 
 Question:Seventeen other states may adopt California's rules if the _ administration allows it, representing over half the vehicle market.

Answer: Barack Obama


Question: Was it the ultimate adventure or an audacious act of disrespect that should be punished by law? An Internet sensation was touched off this week by Russian photographer Vadim Makhorov and a group of his friends -- the group ignored regulations prohibiting the public from climbing on the Pyramids at Giza, Egypt, and came away with spectacular photos. The images from Makhorov and another photographer, Vitaliy Raskalov, were taken on top of the Pyramids from positions that avoided detection by guards. The photos have incited reactions ranging from envy and awe to indignation and concern for the preservation of the ancient wonders.Russian photographer caused sensation with pictures from top of the PyramidVadim Makhorov explains how and why he did itMakhorov: "I would like to apologize for this ascension." 
 Question:In an email to CNN, Makhorov now explains his reasons for flouting the regulations, and issues an apology to _ and the world.

Answer: Egypt


Question: With Branislav Ivanovic out injured, Jose Mourinho is forced to look for an alternative at right back against Aston Villa. But one name mentioned by the Chelsea boss is a relative unknown: Ola Aina. While Cesar Azpilicueta, Kurt Zouma and Ramires were all touted as options for Saturday's game by Mourinho, it was the name of the academy product who turned 19 last week that drew the most interest for many spectators. Here, Sportsmail takes you through who the young right back is and why Mourinho rates him highly. Now aged 19, Temitayo Olufisayo Olaoluwa Aina has been at Chelsea since he was 11, progressing through the club's youth sides while working his way up the ranks with England, too.Chelsea manager Jose Mourinho says he has four options for a right backFirst-choice Branislav Ivanovic is out after picking up a hamstring injuryCesar Azpilicueta, Kurt Zouma, Ramires or Ola Aina could deputiseAina is a two-time FA Youth Cup winner who impressed Mourinho on tourTony Pulis: Chelsea boss Jose Mourinho's £50,000 fine is 'extraordinary' 
 Question:A pacey option at right back, _ can also play in the centre of defence, on the left, or in a more advanced position on the right wing.

Answer:
Ola Aina