238076
TriOviz for Games Technology was showcased in June 2010 at Electronic Entertainment Expo 2010 by Mark Rein ( vice president of Epic Games ) as a 3D tech demo running on an Xbox 360 with Gears of War 2 .
 Games, Mark Rein, Epic Games
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Games, Mark Rein, Epic Games