TASK DEFINITION: Given a document, find the main entity about whom the author is writing. Write the full name if mentioned in the text. Note that URLs in the text have been replaced with [Link].
PROBLEM: Gov. Jerry Brown of California  echoed those comments.
"In the United States  we have a federal system  and states have real power as do cities. And when cities and states combine together  and then join with powerful corporations  that's how we get stuff done "  he  said.
 His  speech was briefly interrupted by anti-coal and anti-fracking protesters  who held up banners and shouted "We're still in! Trump's still out!"
 California Governor Jerry Brown  speaks in the U.S. Climate Action Center at the COP 23 Fiji UN Climate Change Conference in Bonn  Germany  Saturday  Nov. 11  2017.  Brown 's and Michael Bloomberg's "America's Pledge" campaign works to compile and tally the climate actions of states  cities  colleges  businesses  and other local actors across the entire U.S. economy. (AP Photo/Martin Meissner)
 California Governor Jerry Brown  speaks in the U.S. Climate Action Center at the COP 23 Fiji UN Climate Change Conference in Bonn  Germany  Saturday  Nov. 11  2017.  Brown 's and Michael Bloomberg's "America's Pledge" campaign works to compile and tally the climate actions of states  cities  colleges  businesses  and other local actors across the entire U.S. economy. (AP Photo/Martin Meissner)

SOLUTION: Jerry Brown

PROBLEM: After enduring one too many maddeningly slow boarding experiences  Jason Steffen a professor of physics and astronomy at the University of Nevada Las Vegas  began digging into the unexpectedly complicated mechanics of efficiently ushering passengers onto planes.
In 2008   Steffen  created a computer simulation to evaluate existing boarding methods and ultimately design what  he  claims is the most efficient option for getting restless passengers into their seats. The results were published several years ago in the Journal of Air Transport Management (summarized here).
In  his  research   Steffen  identified the two most common factors responsible for slowing the boarding process to a painful crawl:
In fact  the most routine boarding process â from back to front â is actually the slowest of them all   Steffen âs argues  Itâs even less efficient than boarding a plane in a completely random order.
 Steffen  claims that  his  proposed method  which minimizes the former issue and eliminates the latter  could significantly reduce boarding times  thus cutting down on overall door-to-door flight lengths  and ultimately saving airlines hundreds of millions of dollars a year.

SOLUTION: Jason Steffen

PROBLEM: DORTMUND  Germany (Reuters) - Cristiano Ronaldo scored twice in his 150th European appearance to give Real Madrid a 3-1 victory at Borussia Dortmund  their first against them in Germany  and make it two wins out of two matches in their Champions League Group H.
Soccer Football - Champions League - Borussia Dortmund vs Real Madrid - Westfalenstadion  Dortmund  Germany - September 26  2017 Real Madrid’s Cristiano Ronaldo celebrates scoring their second goal with Gareth Bale REUTERS/Leon Kuegeler
Daniel Carvajal responded with a fine solo effort and  Ronaldo  also came close a little later but the Spaniards were lucky not to concede a penalty when Ramos cleared a Maximilian Philipp effort on the line with his hand.
Soccer Football - Champions League - Borussia Dortmund vs Real Madrid - Westfalenstadion  Dortmund  Germany - September 26  2017 Real Madrid’s  Cristiano Ronaldo  celebrates scoring their third goal with Sergio Ramos and Luka Modric REUTERS/Leon Kuegeler
“We had our chances but Real did it really well ” said Dortmund’s Gonzalo Castro. “With players like Bale and  Ronaldo  they really know how to take advantage of the gaps. It is too dangerous against such teams to stand too high up the pitch.”
It was Real who scored again when Bale was given far too much space to cut in and find  Ronaldo  in the heart of the box in the 50th.
The Germans quickly pulled a goal back with Aubameyang stabbing in a Castro cross to keep the game tight  until  Ronaldo  broke clear and fired in their third goal and their 14th in the last seven Champions League matches.

SOLUTION:
Cristiano Ronaldo