49138
At stake is some $ 4 billion , the value of a roughly 50 percent interest in Sumner Redstone 's National Amusements , the movie theater company that in turn owns controlling shares in Viacom , CBS and Midway Games .
 person of company: Sumner Redstone, Viacom; company shareholder among major shareholders: Sumner Redstone, Viacom; person of company: Sumner Redstone, CBS; company major shareholders: Viacom, Sumner Redstone
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: ethnicity, place lived, geographic distribution, company industry, country of administrative divisions, administrative division of country, location contains, person of company, profession, ethnicity of people, company shareholder among major shareholders, sports team of location, religion, neighborhood of, company major shareholders, place of death, nationality, children, company founders, company founded place, country of capital, company advisors, sports team location of teams, place of birth 
Text: {0} 
 Entity Pairs:  Sumner Redstone, Viacom; Sumner Redstone, Viacom; Sumner Redstone, CBS; Viacom, Sumner Redstone 
Answer:
 person of company: Sumner Redstone, Viacom; company shareholder among major shareholders: Sumner Redstone, Viacom; person of company: Sumner Redstone, CBS; company major shareholders: Viacom, Sumner Redstone