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: The Tampa Bay Times reports that  32-year-old Adam Matos  was found guilty Thursday of four counts of murder. The penalty phase starts Monday 
 Matos  could get the death penalty if all 12 jurors vote for that. Otherwise he would be sentenced to life in prison.
Authorities say  Matos  fatally shot Megan Brown and her father  Greg Brown  at their Hudson home in 2014.  He  also fatally beat Margaret Brown and Nick Leonard with a hammer  jurors heard.
 Matos  testified Wednesday  he 'd been suffering from paranoia and committed the slayings in self-defense.
The 4-year-old son of Megan Brown and  Matos  was at the home when the killings occurred.

A: Adam Matos
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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
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Q: Loser: Cris Collinsworth
 For  his  partisan commentary. It's one thing to dispute Corey Clement's touchdown reception or question the consistency of what the NFL considers a catch  but it's another thing to say if that's a catch  âI give up.â Then  after the commercial break  he grumbled  âTake what you can get against the Patriots  I guess.â
Winner:  Cris Collinsworth 
After NBC reminded viewers in the pregame that âMiracle on Iceâ coach Herb Brooks hails from Minnesota  Al Michaels remarked: âI canât tell you how many people this week wanted (me) to say: âDo you believe in miracles?!ââ  Collinsworth  replied: âIf Nick Foles pulls this off  do I get another one?â

A:
Cris Collinsworth
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