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].

[Q]: Rihanna  has emerged as the unlikely inspiration behind Arsenal's thumping 5-1 win against Everton.
 The singer  was at the Emirates to watch the match and enjoy the Gunner's work  work  work  work  work ethic.
After the match   she  posed with midfielder  Mesut Ozil  who described  her  as the team's "lucky charm".
The German said he was "still unbeaten with Riri" - a reference to when  she  came to watch the 2014 World Cup Final between Germany and Argentina.
Ozil himself couldn't get on the scoresheet but with  Rihanna  pulling the inspirational strings during a pre-match meet and greet  other players stepped up.
It's just a shame that whoever was looking after  her  social accounts still referred to the game as "soccer".
After the game  manager Arsene Wenger seemed to play down the importance of  Rihanna 's contribution  focusing instead on his side's "penetration and sharper game".
Given Arsenal's up and down season  there are probably high level talks with  Rihanna 's people to see if  her  schedule allows any more trips to watch the team - with one eye surely on  their  next Europa League match  away at Ostersunds FK.
[A]: Rihanna


[Q]: Barak is the first Israeli official to visit Turkey since the diplomatic feud that erupted Monday after Israel's deputy foreign minister  Danny Ayalon  summoned Turkish Ambassador Ahmet Oguz Celikkol to complain about a TV show. The ambassador was forced to sit on a low sofa without a handshake  while Ayalon explained to local TV stations that the humiliation was intentional. Outraged  Turkey threatened to recall the ambassador  forcing Ayalon to apologize.
 Barak on Sunday met with Turkey's Foreign Minister Ahmet Davutoglu to discuss the latest crisis. He is also scheduled to meet Turkish Defense Minister Vecdi Gonul later Sunday.
 Barak and his fellow Labor Party member  Minister Binyamin Ben Eliezer  have significantly warmer relations with Turkey than Ayalon and Foreign Minister Avigdor Lieberman's ultra-nationalist party.
 Upon his arrival in Turkey  Barak was greeted warmly at the airport by a Turkish admiral. His first stop was at the mausoleum of modern and secular Turkey's founder  Mustafa Kemal Ataturk  whom Barak praised as an inspiration in making the region "one of peace and security."
[A]: Barak


[Q]: Louna Dennis said Friday that her son   Matthew McCree   "loved everyone."
 McCree  was fatally stabbed Wednesday at the Urban Assembly School for Wildlife Conservation in the Bronx. A second student was wounded and remains hospitalized in critical condition.
Louna Dennis  left   the mother of Matthew McCree   is comforted by a family member as  she  holds a news conference at  her  attorney's office  Friday  Sept. 29  2017  in the Brooklyn borough of New York. Fifteen-year-old McCree was stabbed to death in his Bronx high school history class by Abel Cedeno on Wednesday. (AP Photo/Mark Lennihan)
 Louna Dennis  the mother of Matthew McCree   holds a news conference at  her  attorney's office  Friday  Sept. 29  2017  in the Brooklyn borough of New York. Fifteen-year-old McCree was stabbed to death in his Bronx high school history class by Abel Cedeno on Wednesday. (AP Photo/Mark Lennihan)
[A]:
Matthew McCree